Do-it-yourself rollsen TV repair rollsen

In detail: do-it-yourself Rolsen TV repair from a real master for the site my.housecope.com.

Rolsen C2116. Vertical stripe width 2-3 cm. Breakage of the capacitor C512 0.33x400.

Rolsen D29R55 sharply enlarged image, the size was highly dependent on brightness. After checking, I found faulty VD705, VT701, changed the ST1803DHI transistor to BU2508DF. When turned on, the image is enlarged, the C704 turned out to be faulty.

Rolsen C21R90. A raster appears with LOH when turned on and after 4-5 seconds, it switches to the duty room, to the remote control and does not respond to the keyboard. Open R894 (270K) - 2SA1015 is in the V890 base circuit

Rolsen C 2116. When turned on turns off after a few seconds - C028 leak on the PROTEKT bus.

ROLSEN 2116 intermittently does not turn on from standby mode, or the picture disappears, the sound remains. The supply voltage of the TMP87CM38N processor in standby mode periodically drops to 3.6-3.8v. The discrepancy with the C804 circuit should be 470 microfarads, it costs 100 * 50v, R802 instead of 2.2 kΩ, it costs 1 kΩ. After the replacement, everything worked.

ROLSEN 2118, when turned on, can issue a narrowed frame on a blue background, with a twist on the right. But more often, the slightly narrowed frame and white raster does not respond to control. Defective 24C04. It works fine on the flashed firmware, but the geometry and white balance do not match. After roasting the 24C04, the firmware was considered a programmer and was overwritten in new memory.

Rolsen C21R20 TV does not turn on, a 2 A fuse and a rectifier diode D805 burned out in the power supply, after replacing them, the TV started up, but there was no tuning to the channels, it turned out that the B-E transition in the V001 C1815 transistor had a short circuit, after replacing it, the setting appeared.

Video (click to play).

Rolsen C21R92 / 95 Processor TDA9381PS / N2 / 2I1373 After passing the test, everything is OK goes into standby mode. Replace TDA6107.

Rolsen C-2121. Narrow horizontal stripe - the personnel microcircuit TDA 8356 is faulty, after its replacement the personnel one appeared, but the LOCHs are visible at the top of the screen, there was a 22 Ohm R416 in the cliff.

Rolsen C-2160. At the bottom of the screen, barely noticeable appear from the beginning, but with warming up, more and more noticeable horizontal black stripes, checking and replacing the strapping of the personnel microcircuit did not eliminate this shortcoming, only after replacing the personnel microcircuit STV 9302A with TDA 9302H everything became normal.

Rolsen C-2190. Does not leave the duty in the operating mode - internal short circuit to GND 5 feet (KEY) and 57 feet (GND osc) in the CH05TO102 processor (TDA 9381PS / N2 / 2I1091).

Rolsen C2131, C2133, C2150. There are chaotic blue lines on the screen, the image is shaking from frame to frame. As if there is no frame sync. Treatment - in parallel with the OS frames, put resist 560-680om.

Rolsen C2119 Reduced horizontal size, the size of the frames with a twist on top is increased. Checking the power supply showed a total loss of capacity of the electrolytic capacitor 200.0x160v across the 130V output rectifier.

ROLSEN C2119 No frame scan... After replacing the personnel microcircuit, when the volume is increased, the image and sound disappear from the TV panel, and there is snow on the raster. It is necessary to solder everything in the area of the microcontroller.

Rolsen C2170IT. It periodically turns off during operation, goes into standby mode. Sometimes it is impossible to enable. Solder the TDKS leads.

Rolsen C-2150, C-2131 Chaotic blue lines on the screen when the blue background is on. As if there is no line sync. It is necessary to put a resistance of 470 ohm-1 Kom in parallel to the personnel coil of the deflecting system. Determined empirically. Deflection system "SAMSUNG".

ROLSEN C-1420 On the screen, the snow is horizontally centered. a few centimeters. Everything in the service is adjustable except for horizontal correction. The TV cannot be tuned in to the station, although the search is turned on. The defect turned out to be in the TB1238AN microcircuit and the V001 2SC1815 tuning transistor.

ROLSEN C2116, 2118, 2119. with a standby transformer, it is often necessary to change the network diodes D803-D806 (RM11C), if the TV is repaired for the second time with the replacement of one of these diodes, it is also necessary to replace the network capacitor 100mkf * 400v. The capacitor periodically breaks off, after which a powerful pulse arises, which disables starting from the diodes D803-806, VT802, ending with the CH08T0934 processor - through the standby transformer.

Rolsen C1420. No program reception... At times, the TV could work. When measured on the tuner, there is no + 5V power supply. The reason is a break in the throttle designated as R104.

Rolsen С211 6 Operating mode power supply does not start... Defective transistor V802 (2SA1015).

ROLSEN 2120 No color in SECAMe is in PAL. Replace C703 33n (located next to TA1275).

ROLSEN C2116. There is no color in the SECAM system... Broken capacitor C703 (33n) on leg 7 N701 TA1275AZ.

ROLSEN C2118. Does not turn on from standby mode... Defective V802 (2SA1015) in the power supply.

Rolsen 2910. No sound when turned on, the image is slightly narrowed horizontally and vertically, the colors are oversaturated. Instead of 8 volts, 6.5 volts come out from the power supply.The problem in the 0.27 ohm resistor R881 burned out and became 15 ohms.

ROLSEN C2190. The TV does not switch from standby to working. The power supply is intact, there are no voltages on the SDA and SCL buses. EEPROM is not to blame, quartz is good. There is no + 3.3V voltage on the 56th leg of the processor, there is + 3.3V on the 61 and 54 legs. We change the choke L188C.

ROLSEN C2120. screen blue, there is nothing, the on-screen menu is not displayed, there are no service symbols. At the 28th leg of the control processor, it should be 4.8-5 v, in fact, it was 1.4 v. The base emitter transition of the C1815 transistor is broken, it is connected to the 27th leg of the processor by a collector.

Rolsen C1420. Control processor TDA9381PS / N2 / 2I1091 Fault: when the TV is turned on, a raster appears with a reverse beama and after 4-5 sec. switches to standby mode. Does not respond to commands from the remote control and front panel. The reason is an open R894 270K, installed in the base circuit of the v890 transistor, which generates the MUTE signal.

Rolsen C1425. DK system sound cuts out. Resistor R264 820 Ohm is not soldered.

Rolsen C2116. After warming up the TV, color shades begin to change... Defective TB1238AN video processor.

Rolsen C2116. No OSD graphics... There are no frame pulses on pin 27 of the processor (CH08T0934). Broken transistor V010 (2SC1815).

Rolsen C1410. PSU does not enter operating mode... U out. Only 20V. The problem is a faulty PC817 optocoupler.

Rolsen C2116. Does not turn on from standby mode... Reason: short-term by +20 V and +24 V with TPI, and, accordingly, R824: 2 Ohm and R825: 8.2 Ohm - in the open. Reason for short-circuit: D816, D814: 2SK75D. The diode D815 was replaced for prevention along with D816, D814 for a more powerful one. Also, R826: 180 Ohm was cut off and the Zener diode D828: W10Z9,1B was broken (under it the board was heavily charred: apparently, another factory one). Instead of D828, I put "KRENKA" 7809: the 3rd pin - instead of the cathode, the 2nd pin - instead of the D828 anode, and the 1st pin - by volumetric mounting above the board, connected to the R826 terminal, which goes before the conversion to the D828 cathode ... You can pick up the R826 rating somewhat in order to redistribute the heat intensity more evenly and reduce the input voltage by.

Rolsen C2116. When connected to the network, it did not switch from standby mode to working mode. 4 transistors of the power supply turned out to be faulty. The transistors V805, V806 (2SC1815 n-p-n), V802 (2SA1015Y p-n-p) and V803 (2SC3807 n-p-n) turned out to be faulty. In order not to waste time looking for the necessary imported transistors, the widespread KT315 (V805 and V806) and KT361 (V802) were installed in place of the first three. These transistors are suitable for pinout (central output - collector) and according to the scheme, and then practice in terms of electrical parameters. The V803 transistor must be designed for a maximum collector current of at least 1.5A with a saturation voltage of the collector-emitter section of no more than 0.8V. If the saturation voltage exceeds the specified value, the voltage on the + 115V bus in standby mode will be 30-50V, which is fraught with failure of the transistor of the output stage of the horizontal scan due to the incomplete closing of the switching transistor of the power supply (V804). The closest domestic analogue of the 2SC3807 transistor is KT961 (with any letter index). It is possible to install KT815, KT817 that meet the above requirements.

ROLSEN С29R88. No TV signal reception (writes no signal). The tuning voltage from the S3P8849XZZ processor comes to the base of the V160 PH2369 transistor.From the collector V160, the tuning voltage through the strapping comes to 2 legs of the VT (BT) tuner. Parallel to the 2 leg and the ground (near the processor) there is a capacity C161. The leg of the tank was long and shortened the tuning voltage to ground.

Rolsen C29SR157T plat. The inscription on the screen is constantly lit: “Attention! The keyboard is locked! " An attempt to turn off the lock through the Menu from the remote control is impossible, because The menu appears for a split second and then goes out. There is a warning message on the screen again. The problem is in the short-term. membrane keyboard (moreover, several buttons at the same time). I had to turn off the keyboard altogether, turn off the lock through the Menu and leave everything like that.

ROLSEN C2156. No channel tuning when searching, while the search bar shows that the process is in progress. The reason is that the tuner does not receive a tuning voltage of + 33V, a zener diode at 33 turned out to be punched in the W574 model, in the diagram it has the serial number IC703.

The Rolsen C21SR80S Platinum TV was not brought to the workshop, as in the previous article about plasma repair. And I had to go to get the Rolsen C21SR80S Platinum TV myself, to the client's home, which I usually don’t do. Only for friends and good acquaintances.

The client is an old grandmother. She asked the social worker who came to her to ask me for the master to come to her to see what had happened to the Rolsen TV. According to the social worker, the TV or satellite receiver was not shown. In general, it is not clear.

In general, I came to the old woman. Of course, she lives poorly, since she is a firebird. After the fire, the administration allocated the grandmother an apartment in a wooden, four-apartment building in which she has been living for ten years. True, although the apartment is poor, the basic furniture is all there. And as you know, the most important joy in the house is the Rolsen TV, which is also seven years old. And this joy was covered with a copper basin.

Rolsen C21SR80S Platinum TV is connected to a satellite receiver. Of course the Tricolor package. Turned on the TV and receiver. The TV set began to show.

I say to my grandmother - "Shows the same"

She - “Wait ten minutes and won't show”

I say that I'd rather not go for long, take the vacuum cleaner to the client and come. I took the vacuum cleaner, got money for it and back to my grandmother.

Upon arrival, for sure, I do not seem to look. There is a horizontal bar in the middle of the TV. It means that all is not lost, that something is warming up and after that the TV stops showing.

I brought the Rolsen C21SR80S TV to the workshop. Included. The same story. After about three minutes, a horizontal stripe appears in the middle of the CRT.

Disassembled the TV. Vacuum cleaned and started making Rolsen TV repair... He took off the board and began to inspect the parts for the visibility of overheating and the quality of the soldering. Well, if they swing, then I solder it. Condensers are not bloated in appearance, already happy.

By the swing of the main parts, it was determined that the datasheet on the TDA8359J is poorly soldered and there is a swing. The datasheet TDA8359J was soldered, even with partiality. Here is a diagram of this TV, if anyone needs it.

And after these manipulations, the Rolsen C21SR80S TV began to show and was put on a warm-up test.

Upon arrival to the old woman, she was very happy that the TV was alive. Since most likely he was presented to her along with a satellite dish and a receiver, and she herself is not able to buy a new TV.

Yes, probably already there is nothing ...

Here's a story about Rolsen TV repair do it yourself ...

Subscribe to RSS,
There will be Pines up to Heaven,
Here. Not subscribed,
Left without a Pine.

Published - Monday, February 10th, 2014 at 22:06 pm Posted in Job Offline Category. Subscribe to comments RSS 2.0, You can skip to the end and leave a response. Pinging is currently not allowed.

21.) Rolsen C1420. Fault: No reception of programs. At times, the TV could work. When measured on the tuner, there is no + 5V power supply. The reason is a break in the throttle designated as R104.

22.) Rolsen C2116 Fault: the power supply unit of the operating mode does not start. Defective transistor V802 (2SA1015).

23.) ROLSEN C2112FR07187 Fault: the TDQ-5B6M tuner “snows”. The CE05 capacitance is faulty on the AGS tuner leg, it is “leaking”. Login to the service; on the remote control, turn the volume down to zero and, while pressing the MUTE button, press MENU on the front of the TV, flip through the red and green buttons, change the values of yellow and blue.

Read also: DIY repair nissan center

24.) ROLSEN 2120 Fault: there is no color in SECAM in PAL. Replace C703 33n (located next to TA1275).

25.) ROLSEN C2116. Fault: there is no color in the SECAM system. Broken capacitor C703 (33n) on leg 7 N701 TA1275AZ.

26.) ROLSEN C2118. Fault: does not turn on from standby mode. Defective V802 (2SA1015) in the power supply.

27.) Rolsen 2910 and everything on this chassis. When turned on, there is no sound, the image is slightly narrowed horizontally and vertically, the colors are oversaturated. Instead of 8 volts, 6.5 volts come out from the power supply, the problem turned out to be in the 0.27 ohm resistor R881, it burned out and became 15 ohms.

28.) ROLSEN C2190 Fault: brought with a diagnosis, the TDA9381PS / N2 / 2I1091 processor is faulty. The TV does not switch from standby to working. The power supply is intact, there are no voltages on the SDA and SCL buses. EEPROM is not to blame, quartz is good. There is no + 3.3V voltage on the 56th leg of the processor, there is + 3.3V on the 61 and 54 legs. Changing the little green choke L188C.

29.) ROLSEN C2120. Fault: the screen is blue, there is nothing, the on-screen menu is not displayed, there are no service symbols. At the 28th leg of the control processor, there should be 4.85v, in fact, it was 1.4v. The base emitter transition of the C1815 transistor is broken, it is connected to the 27th leg of the processor by a collector.

30.) Rolsen C1420. Control processor TDA9381PS / N2 / 2I1091 Fault: when the TV is turned on, a raster appears with a reverse beam path and after 4-5 seconds. switches to standby mode. Does not respond to commands from the remote control and front panel. The reason is an open R894 270K, it is in the base circuit of the v890 transistor that generates the MUTE signal.

31.) Rolsen C1425. Fault: sound disappears in the DK system. Resistor R264 820 Ohm is not soldered.

32.) Rolsen C2116. Fault: after warming up the TV, the shades of colors begin to change. Defective TB1238AN video processor.

33.) Rolsen C2116 Fault: no OSD graphics. There are no frame pulses on pin 27 of the processor (CH08T0934). Broken transistor V010 (2SC1815).

34.) Rolsen C1410. Fault: The power supply unit does not go into operating mode. U out. Only 20V. The problem is a faulty PC817 optocoupler.

35.) Rolsen C2116 Fault: does not turn on from standby mode. Reason: short-term by + 20V and + 24V with TPI, and, accordingly, R824: 2 Ohm and R825: 8.2 Ohm - open circuit. Reason for short-circuit: D816, D814: 2SK75D. The diode D815 was replaced for prevention along with D816, D814 for a more powerful one. Also, R826: 180 Ohm was cut off and the Zener diode D828: W10Z9,1B was broken (under it the board was heavily charred: apparently, another factory "blunder"). Instead of D828, I put "KRENKA" 7809: the 3rd pin - instead of the cathode, the 2nd pin - instead of the D828 anode, and the 1st pin - by volumetric mounting above the board, connected to the R826 pin, which goes before the conversion to the D828 cathode ... It is possible to select the R826 rating a little higher for a more even redistribution of heat intensity and a decrease in the input voltage to the "KRENKA".

36.) Rolsen C1425 Fault: after switching on, the testing procedure takes place, everything is ok until it reaches the “Audio processor”, puts “. ”, Ok does NOT say, and the screen goes blank, sometimes the image appears for half a second. Press "menu", respectively, the menu is displayed and the image and sound appear too! BUT at the same time he goes through the points from bottom to top. It does not obey the buttons on the front panel at all (there is no lock), however, after it begins to live its own life, the remote control does not obey, it turns off into standby mode, after a while it turns on on its own and everything is repeated again and so on ad infinitum. The problem is in the TDA9381PS / N2 / 2i1091 microcontroller.

37.) Rolsen C21R92 / 95 Processor TDA9381PS / N2 / 2I1373. Fault: after passing the test, everything OK goes into standby mode, as in the secret of 1963. When the beam current is increased by the SCREEN regulator, the image appears, but with reverse lines. Suspicion of loss of emission from the CRT cathodes. A check with the KVINTAL-9.01 device for diagnostics and restoration of CRTs confirmed these suspicions. The cathode currents were in the range of 150-200 µA, at a rate of 1000-1200 µA. After completing the restoration program, the cathode currents returned to normal. Use the SCREEN control to set the “black level” 120V to “red”. The TV worked fine.

38.) Rolsen C2116 Malfunction: arrived for repair after a thunderstorm. When connected to the network, it did not switch from standby mode to working mode. 4 transistors of the power supply turned out to be faulty. The transistors V805, V806 (2SC1815 n-p-n), V802 (2SA1015Y p-n-p) and V803 (2SC3807 n-p-n) turned out to be faulty. In order not to waste time looking for the necessary imported transistors, the widespread KT315 (V805 and V806) and KT361 (V802) were installed in place of the first three.These transistors are suitable for pinout (central output - collector) and according to the scheme, and then practice in terms of electrical parameters. The V803 transistor must be designed for a maximum collector current of at least 1.5A with a saturation voltage of the collector-emitter section of no more than 0.8V. If the saturation voltage exceeds the specified value, the voltage on the + 115V bus in standby mode will be 30-50V, which is fraught with failure of the transistor of the output stage of the horizontal scan due to the incomplete closing of the switching transistor of the power supply (V804). The closest domestic analogue of the 2SC3807 transistor is KT961 (with any letter index). It is possible to install KT815, KT817 that meet the above requirements.

39.) ROLSEN С2116 Fault: Vertical rotation of the image, with a slight image shift: black vertical stripe. The complexity of the repair is that the malfunction disappears, the TV can work perfectly for two or three days, without a defect! On tapping and bending the board, the effect is zero, if the TV turns on normally, then the defect does not appear in any way!
Composition: N001 TMP87CM38N, N002 AT24CO4, N201 TB1238AN, N701 TA1275AZ, N401 TA8403, T100 BSC62T. When the TV is turned on, the main nodes are automatically tested:
1. POWER
2. BUS
3. SYNC
If the sync pulses are normal, at the end of the SYNC line "in the autotest mode, the" OK "symbol appears in green. If there is no synchronization, a red NG symbol appears at the end of the SYNC ”line in the autotest mode. In my case: the symbol NG ”is red! Power supply for MP: 9V, 18V, 24V and 115V., TB1238AN processor is also the norm. After removing the main board from the plastic chassis, next to the fastener, a defect was found under the technical blot, a broken track: between C318 5600P and R512 4.7K! Checking the OX line scan pulse: from 10n TDKS-to 30n (FBP IN) N201 TB1238AN, with such a defect is mandatory! After the track was restored, the TV was restored

40.) ROLSEN C2150 TDA9381 PC / N3 / 1/1730, 24s08, tuner KS-H-148 O. Fault: weak signal with interference, control buttons on the TV do not work. The circuit is similar to ROLSEN C2146,48,39,40. Buttons and resistors checked, 3V is. I began to check the connector, and there they did not have enough legs in the connector even at the factory and did not try to put it there. (X402) no 1 leg. After the restoration, everything worked and I was able to enter the service and set IF 38.0. and the picture went normal. The menu is similar to LG, entering the service menu: set the volume to “0”, turn off the TV to standby mode, press and hold the (V +) button on the TV panel, then press the “0” button on the remote control, keep the buttons pressed until the brightness of the green LED will not increase. The screen should display the inscription IF 38.0 memorizing the settings with the TV / AV button on the remote control.

Just one look at Rollsen TVs proves the high level of quality. Image, sound, color - everything is normal. And if suddenly this is not the case, if the equipment malfunctions, shows with interference, there are extraneous noises, it is necessary to reanimate it. And the sooner the better. Entrust this business to professional telemasters. Only they are able to provide comprehensive repair of Rolsen TVs. It is not a problem for them to eliminate even the most complex technological defects in the TV system. A specialized tool does not harm the equipment, which, as a rule, owners do when trying to fix defects on their own. The vast experience of telemasters makes it possible to cope with the assigned tasks quickly and efficiently.

Do you want to order TV repair Rolsen (Rollsen)?

We are ready to provide assistance at home, for this, please let us know by phone (or through the form on the website) your contact information, with the desired time of arrival. By indicating the brand of the TV, the nature of the malfunction, you will allow the specialist to take additional spare parts, which may be indispensable for the resuscitation of equipment. After providing technical assistance, you will receive a long-term service warranty card in your hands.Democratic prices will pleasantly surprise you, and a free home visit will be an additional bonus.

Rolsen TV does not turn on Model: RL-32L1002U, what's the problem?

It is forbidden to write answers that do not bring any benefit to the questioner from the series: “bring it to the service”, “contact the ASC”, “unprofitable”, etc. Answers like these will be considered a rating cheat, the answers will be deleted, and the account will be blocked.

If you undertake to help people, answer fully. Explain why, if you recommend, for example, reflashing your phone, then write how to do it. If you write that repairs are unprofitable, explain why.

And so, let's see .. Turn it on. The standby indicator is on. Let's try to turn it on by clicking on the channel switching .. It does not turn on. We disassemble!

We put the TV with a picture tube on a soft surface, for example, on a chair:

After that, we remove the plastic covering the power cord, remove the back cover of the TV to the side:

Something is holding the lid. We look through the crack - it holds the screw in the area of the rear tulips. Gently pick up and peel off the overlay with the inscriptions near the tulips, there really is a screw hidden under it, unscrew it too:

After that, the cover was easily removed. So we got to the board. It should always be remembered that when hitting, parts with a large mass are the first to suffer. (TDKS, power transformer, personnel microcircuit on the radiator, etc.). Therefore, the first thing we pay attention to is multiple cracks in the TDKS area:

Nothing criminal was found in the rest of the board. Recovering printed circuit tracks. For this I use cross-connect (who does not know, this is a single-core wire in isolation used to connect (cross) wires in the telephone box). It turned out like this:

Putting it all back, turn it on, everything works!

“. half of the screen is superimposed on the bottom and and in the middle of the screen is a bar where both halves of the image are blended. "+". the line transistor rang. ”= How many brooms were smoked before such“ advice ”?!

To the author - ESR-meter and devices in hands or a newspaper with announcements of repairs!

I didn’t see anything funny, I don’t know how to explain in more detail about the image on the screen

I haven’t called anything yet, today I will measure the voltage and unsubscribe

Image - Do-it-yourself rollsen TV repair rollsen

you propose to renovate the ad, but why are you here if it is easier for you to send it for repair. as they say, live and learn.

Do you want to order TV repair Rolsen (Rollsen)?

We are ready to provide assistance at home, for this, please let us know by phone (or through the form on the website) your contact information, with the desired time of arrival. By indicating the brand of the TV, the nature of the malfunction, you will allow the specialist to take additional spare parts, which may be indispensable for the resuscitation of equipment.After providing technical assistance, you will receive a long-term service warranty card in your hands. Democratic prices will pleasantly surprise you, and a free home visit will be an additional bonus.

1756.) Rolsen C21R20. The TV does not turn on, the power supply burned out
2A fuse and rectifier diode D805, after changing them
the TV started, but there were no channel settings, it turned out that B-E
the transition of the transistor V001 C1815 has a short circuit, after it
change setting appeared. Krylov Alexander

3338.) ROLSEN C21R20. two-chip: TB1238AN and CH08T094. Defect: color in
PAL mode is not available. I stood on the top of the crystal output
oscilloscope 4.43 - TV went in defense, to the conclusion of another - appeared
color! Soldered 33pF parallel to C112 (12p). Serov Andrey

3153.) ROLSEN C21R60 (on 8821СRNG5JB2, TCL-A30V02-TO). Defect: duty room
Yes, it does not work. Replacing 24С08 and earned TV, but
some menu items were missing. In the service, I changed the options and items
the missing ones appeared. Runs with clean memory. Login to the service - up to 0
on the muzzle the volume and press on the remote control DISPLAY. Caution - in the service
do not subtract ORT 87, because. The firmware in memory flies immediately. Alexei

Material is added to the pages as data accumulates from the available technical documentation, personal author's experience and from the masters of repair forums. More details.

Technical description and composition of the ROLSEN RL-19B01 TV, panel type and modules used. The composition of the modules.

Inverter (backlight): Backlight Inverter-JSI-190411A

Power Supply (PSU): JSI-190411 A

MainBoard: RSAG7.820.1653 VER.A

IC MainBoard: MST9E19B-LF, F40-100GCP (EN25F40), K24C32, ATMLH914 04B (24C04), 24C02, TDA9886TS, CD1517CP, DC-DC - Z1015AI

RL-19B01 Specifications

ROLSEN TV made on the RSAG7.820 chassis, like many other electronic devices, it is advisable to start repairing with an inspection of all external and internal elements. Often, according to certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before taking the necessary measurements, which will make it possible to determine a further algorithm for troubleshooting and localizing a defect. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for a repairman can be an essential clue in assumptions about the causes and consequences of a malfunction.

In cases where the ROLSEN RL-19B01 TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turned on, the JSI-190411A power supply module is most likely faulty or there is no power to the processor on the motherboard (a typical defect of some ROLSEN TV models). When diagnosing and repairing a power supply, first of all, replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, the cause must be identified. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of a PWM regulator microcircuit or breaks in resistors in its strapping.

Sometimes the ROLSEN RL-19B01 TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the backlight converter, or the lamps themselves, which can be checked by replacing. In such cases, it is necessary to make sure that all the electrolytic capacitors of the filter are in good working order for the power supply of the inverter itself, including the power supply unit (power supply unit). All necessary precautions must be taken when disabling the inverter protection during diagnostics and do not leave it disabled after repair is completed.

Repair of the RSAG7.820.1653 VER.A motherboard must begin with diagnostics and testing of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. Complicated repair of MB (SSB) board in some cases is possible and is practiced by repairers. To do this, check and, if necessary, replace elements MST9E19B-LF, F40-100GCP (EN25F40), K24C32, ATMLH914 04B (24C04), 24C02, TDA9886TS, CD1517CP, DC-DC - Z1015AI. Malfunctioning BGA chips are usually easy to detect by warming up.

Attention to users! Self-repair of the ROLSEN RL-19B01 TV without the appropriate qualifications and experience can lead to its complete non-repairability!

The appearance of the MainBoard MST6M182VG-T7S is shown in the figure below:

MST6M182VG-T7S can be used in TVs:

DAEWOO DSL-24L31E (Panel K236WL), ERISSON 23LEK14 (Panel 1080p Full HD 1920 × 1080), ERISSON 19LEK14 (Panel M185BGE-L22 Rev. C1), HYUNDAI H-LED22V5 (Panel LM215WF4), HYUNDAI H-LED23011F (LM TL) (D1)), ROLSEN RL-17L1002U (Panel LTN173KT02), RUBIN RB-19SL1U WH (Panel 19 inches).

External view of the power supply

The main features of the ROLSEN RL-19B01 device:

Installed matrix (LCD-panel) HT190WG1-600.
The Backlight inverter is used to power the backlight lamps, controlled by the BIT3105 PWM controller.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-19B01 TV is carried out by the JSI-190411 power module, or its analogs using SG5841SZ (SO8) microcircuits.
MainBoard - the main board (motherboard) is an RSAG7.820.1653 module, using microcircuits MST9E19B-LF, F40-100GCP (EN25F40), K24C32, ATMLH914 04B (24C04), 24C02, TDA9886TS, CD1517CP, DC-DC - Z1015AI ...
The TDQ6FT / W126H / ROH tuner provides reception of television programs and tuning to channels.

Additional technical information about the panel:
Brand: BOE
Model: HT190WG1-600
Type: a-Si TFT-LCD, Panel
Diagonal size: 19.0 inch
Resolution: 1440 × 900, WXGA +
Display Mode: TN, Normally White, Transmissive
Active Area: 408.24 × 255.15 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V

Information about the composition of televisions on this site is accumulated from the records of repairmen and forum participants.
Be careful! Typos and errors possible!

In the next book of the popular series, the most popular models of modern TVs from Rolsen Electronics are described.

Seven TV chassis are considered, on which more than 20 TV models with CRT diagonals from 14 to 29 inches are produced. For each model, a schematic diagram, a detailed description of the operation of all its constituent parts, and the procedure for adjusting units in service mode are provided.

The practical value of the book is determined by a detailed description of typical malfunctions and a description of the methods for finding and eliminating them.

The appendix contains comprehensive information about UOC chips (Ultimate One Chip) - television signal processors with the functions of a teletext decoder, subtitles and a TDA935X / 6X / 8X PS / N2 microcontroller from PHILIPS.

The book is intended for a wide range of professionals involved in the repair of television equipment, as well as for radio amateurs interested in this topic.

Modulator output. Connects to the gate of the output transistor

Microcircuit power supply. This voltage is also used to generate internal reference voltages.

Input for connecting an external safe start capacitor, provides a smooth increase in the output voltages of the power supply

Zero detector. Feedback input for determining the moment when the voltage of the secondary winding crosses zero. Used to control the saturation of the transformer core

Line scan Line scan pulses with pin. 40 video processor N301 TDA8844 (Fig.6.3 on the tab) through the buffer stage on the V432 transistor and the T431 matching transformer go to the output stage, implemented on the V433 transistor. The load of the output stage is the primary winding of 1-2 line transformer T402 and line coils OS. In addition, the line scan generates voltages for powering the kinescope - anode (HV), accelerating (EV), focusing (FV) and heating voltage (HEAT), as well as voltages required for the operation of other TV units: • 16 V-3 - personnel scan; • 45 V - frame scan and tuner; • 200 V - output video amplifiers. To limit the current of the kinescope beams, a circuit with a V436 transistor is used. The voltage at the base of the transistor depends on the current of the secondary winding of the T402 transformer and is formed by a divider on the resistors R456 — R459. The signal about exceeding the beam current is sent to the pin. 22 video processor N301, which leads to a decrease in the contrast and brightness of the image.

Frame scan The frame scan output stage is made on the N401 microcircuit (TDA8350). The sawtooth voltage of the frame scan is formed by the N301 video processor and with a pin. 46–47 are connected to inputs 1–2 of N401.

Rolsen products are renowned for their reliability, durability and good build quality. However, the problem due to which the Rollsen TV does not turn on can catch the owner of the equipment by surprise. This may indicate both an insignificant malfunction of the device, which the user can cope with on his own, and a significant breakdown, for the elimination of which the help of a qualified foreman of the service center "For repair!" Will be required.

This problem may appear due to power surges, software failure, power supply failure, capacitor burnout, system board malfunction, or breakdown of other components of the device.

Depending on the cause of the problem, the TV may behave differently:

the light on the panel of the device blinks several times - a specific number of blinks indicates a certain malfunction (self-diagnosis);
the indicator is on continuously - this indicates that current is flowing to the power supply unit, however, the protection of the unit does not allow the device to be turned on;
the light is off - this may indicate a breakdown of the power supply;
the TV makes uncharacteristic sounds: clicks, crackles, etc.

The diagnostics that our masters make at the first stage will certainly show the real reason for the incorrect behavior of the TV. But, before contacting our service center, we recommend that the owners of the equipment do the following:

turn off the TV panel and try to activate it from the button on the panel, and not from the remote control;
turn off the device for 20-25 minutes;
check the functionality of the batteries in the remote control;
disconnect extraneous external devices from the TV.

If you have performed these steps, but the Rolsen TV does not turn on, as before, feel free to call our company and we will send a specialist who will carry out repairs at home as soon as possible.

Based on the diagnostic results, the master is ready to repair or replace the following parts:

power supply unit;
inverter;
microcircuits;
capacitor;
other components.

Video (click to play).

Modern Rolsen TVs have a rather complex device, so it is almost impossible to make repairs on your own. The company "In repair!" always ready to help our clients. We provide services in Moscow and St. Petersburg.

Rate the article:

Grade 3.2 who voted: 84