In detail: do-it-yourself monitor repair samsung syncmaster 920nw from a real wizard for the site my.housecope.com.
A Samsung SyncMaster 920NW LCD monitor has been repaired with a declared malfunction - it does not turn on.
We try to turn it on - indeed, the LED is blue, but there is no image. Well, let's take it apart. The monitor came with the stand unscrewed, so a little less time will be spent on disassembly.
Gently snap off the back cover with a pick:
We remove the protective tin from the lamp connectors, disconnect the lamp connectors and disconnect the loop going to the matrix, it should look like this:
We remove the iron frame with the boards screwed to it. We carefully examine the board of the power supply-inverter from the side of the tracks:
No crime is visible. Well, let's unscrew four screws and look at the board from a different angle (from the other side):
We take out the board from the tin, after having disconnected the connector going to the scaler board:
Carefully examining it, we see two swollen capacitors C815 1000mFx25V and c818 1000mFx10V:
Putting it all in reverse order. We include:
Turned on. We connect the vga cable to the system unit:
Working. We put on a four-hour run. Everything is working. The whole monitor malfunction was in the c815 and c818 capacitors.
By the way, I am now concerned that the video content on youtube is gaining more views than the presentation of information on the topic of repair in text form. I think maybe it's worth moving on to the video? After all, all Internet experts unanimously claim that video is the future of the Internet industry. I think it might be worth buying SjCam cameras and filming your repairs? Although, on the other hand, there are already a whole bunch of such channels on youtube. And what do you think? Is video or text the future? Or maybe there is some third option?
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Video (click to play). |
All photos were taken with a Kodak EasyShare C1530 camera.
Monitor Samsung SyncMaster 920NW.
Fault - when turned on cold, it works for about 40 seconds and turns off.
Each time the monitor is turned on, it shows an image for 3 seconds, then the screen turns off.
Please tell me what it can be - an inverter, power supply, etc.?
Where to dig first?
Monitor Samsung SyncMaster 920NW.
Fault - when turned on cold, it works for about 40 seconds and turns off.
Each time the monitor is turned on, it shows an image for 3 seconds, then the screen turns off.
Please tell me what it can be - an inverter, power supply, etc.?
Where to dig first?
The question about the samsung syncmaster 920nw LCD monitor is the following! When this monitor was turned on, it went out after 1-2 seconds, which was diagnosed as a dump of the cold ends of the upper backlight lamps (there was no way to solder it). There was a donor at hand, but only with lower lamps. I put the working lamps on top of the lcd matrix being repaired, and it’s working! But after turning on everything is ok, and then it happens as if the picture starts to brighten from above, somehow float and the colors slowly change. All this takes about 15-3 seconds. I turn it off. What is it also an inverter?
Maybe a dirty interface connector to the matrix?
The cat has 4 legs. Entry, exit, ground and food.
It looks like the matrix was hooked a bit - the train fell off from the glass or something else ..
Rom.by, what's in my name for you.
About a miracle. Everything worked! I pulled out and stuck the cable near the matrix, although there I did not touch the cable at all, apparently I slightly pulled it up when I stuck it in. Thank you guys so much.
A healthy monitor will turn on and display the message “check signal cable", Which will change its position and randomly move around the screen.
In the event of a malfunction, the monitor may turn off spontaneously after being turned on or not turn on at all.
The main symptoms and malfunctions:
- White screen
- does not turn on
- spontaneously turns off
- message "non-optimal mode" when a PC is connected
- black bars on the screen (wide)
From the experience of repairs:
A 2006 Samsun 920n monitor arrived at the company's seowis center with customer complaints about its performance. When turned on, the monitor does not start up, and the power indicator and screen blink at irregular intervals.
As a result of diagnostics, it was established that the inverter power supply unit is out of order in the device.
Due to the sufficient reserve of brightness of the backlight lamps and the excellent condition in general, the monitor was repaired in 20 minutes in the presence of the client.
The warranty for the work performed was 90 calendar days.
The symptoms of malfunction are described in the video below:
The monitor has a plastic cropper that can be easily disassembled
The tilt-adjustable stand is secured with four screws and removed for repairs:
The label on the back of the monitor provides information on the production date (2006):
The electronics of the monitor are covered with a solid metal case that serves as a screen and an internal chassis:
Inside the monitor there are 2 boards: an inverter power supply and a main board:
On Chassis: Power Supply Inverter Board
Internal defective and new inverter power supply:
Replacement health testing:
Checking the assembled monitor:
In the warehouse of the service center, power supplies and an inverter for Sasung monitors 17-19 inches are always available.
Samsung 920 monitor broken? Bring it in today and we will repair it in just 20 minutes!
ESR meter - ali.pub/ho6yg
Capacitors 1000 uF 25V - ali.pub/u64ve
Capacitor set - ali.pub/9uhxm
VK group -
Site - / p>
I changed the same conduits, as well as the R803 resistor, which was burnt out. All the other resistors, conductors and diodes rang, like all the rules, but the fuse burned out, after replacing the fuse, new ones also burn. What could be the reason, what do you think?
Thanks to! We will look and understand)
Call Q804 and D802, most likely Q804 is broken once R803 was burnt out
Is the mains fuse on? Diode bridge, mosfet and shimka in the primary unit, look
please tell me the wiring gray black pink white This is how I understand the backlight them, no matter how to stick it in?
ESR meter -
Capacitors 1000 uF 25V -
Capacitor set -
VK group -
Site -
Composition Newsroom Replacement of backlight inverter field switches.
The monitor is covered, the backlight is turned off. We look at how to diagnose and fix it.
Samsung SyncMfster 720n. Description of the circuit, diagnostics, do-it-yourself repair
Repair of the monitor power supply (inverter repair) or how to repair the monitor with your own hands using the example of the LG FLATRON W1942S monitor - video (Does not work, the monitor is broken). The video provides an overview, disassembly, replacement of elements (capacitors), assembly and testing of the monitor. The repair price is 24 rubles. (2 capacitors) The total cost of repair is 54 rubles (replacement of 5 capacitors). The entire renovation from start to finish took about 40 minutes. Difficulty of work 1/5 Subscribe to my channel (Himself a Master)
Repairing the malfunction of the Samsung 920nw monitor, the image disappears after a few seconds, there is no backlight
This monitor was purchased defective for parts. There was no point in repairing the monitor to the client since the matrix was damaged.
Since the defect of the matrix was not a very large monitor, they decided to leave it for their service needs. We turn on the monitor and look at the declared malfunction "Samsung 920nw image disappears" - the monitor continued to work but the backlight disappeared.
Diagnostics showed that 1 backlight lamp is faulty in the monitor. Taking into account the fact that the repair did not need to be done efficiently, it was a decision to turn off the protection on the Samsung 920nw monitor.
To do this, on a capacitor which is connected through a resistor to pin 3 of the oz9938gn pwm, we solder a 500k resistor. After turning off the protection, the monitor turns on, the image does not disappear. For more even illumination, 2 llamas were left (one upper and one lower).The monitor works safely to this day.
Remember disabling protection is not good. If you need to repair it qualitatively, it is better to replace the defective lamp.
Samsung 920nw monitor repair picture disappears.
A Samsung 920NW monitor has been repaired with a malfunction that does not turn on and the power button blinks. The monitor was in operation as a test monitor, it was used to check and configure computers. 920NW models have two main faults - inflated capacitors and backlights.
When the monitor was turned on, the LED on the button blinked at intervals of 2 seconds, this behavior is similar to dried capacitors.
It is necessary to disassemble the monitor by unscrewing the latches, I do this with a scalpel around the perimeter and remove the metal protection.
Next, carefully pull out the high-voltage wires so as not to break the latches.
Then we turn over the metal casing and unscrew the five screws to remove the board with the power supply and inverter.
After a visual inspection, a swollen capacitor of 1000 microfarads of 10 volts was found, this capacitor most likely stands in the power supply of five volts, it must be replaced.
I replaced the standard capacitor with 1000 microfarads of 25 volts, I always put capacitors with a voltage margin, they heat up less and work longer.
For prophylaxis, we check the rest of the capacitors with an esr meter; in our case, no more defective capacitors were found.
We assemble the monitor and install it on the technical run.
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How to save money on Samsung 920nw monitor repair. Does not turn on.
Such a breakdown is quite common. If you have similar symptoms, then without hesitation, disassemble and change the capacitors yourself. In our case, 10V 1000 ICF and 25V 1000 ICF. Of the tools you need only a soldering iron and a Phillips screwdriver.
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Samsung SyncMaster 920NW monitor repair.
Hello everyone, the channel has just become a service today we have a repair here is such a samsung monitor 19 marking feeling a little later I will show
when disassembling, I can even now show the SIM card to the master 920 nw this monitor was dragged by the bogies during the May period
holidays for sale shouted here that he was super all the workers just turned off, but in fact, this is how everything goes about when it immediately goes out, that is,
he has problems with the backlight I checked him said take him away from here they said give at least some
money, well, in short, inal 100 rubles, that's all and it ended and they took 100 rubles, they left the monitor, so I think the meaning of it
fix it because it can be used or put up for sale what will we do now I
I will rearrange the camera in the normal position, we will disassemble the monitor, so I decided not to disassemble the monitor for the camera, it just decorated me
I put it on charge and tore it off, but I didn't even open it yet, so now we will be together this
do we screw the nets screws on the flesh, we don’t run around with our hands, because we have a clerk there who can be charged
now we will check it at the same time discharged dead no so he should be here somewhere after
tank no no no it's not him somewhere the bridge is shorter, we will assume that he is discharged to you what I do not see from the conclusions there is a case here if not means
we will be hit a little, not of course with an explosion that with them they can only have two problems, these are capacitors
the inverter transformer here I already see that the capacitor and the thickness are in poor condition and to turn off, of course, everyone was looking to unwind
because he does not want to go out on the side, the power is soldered to the scaler, you still need to wind up the connector itself.
of course everything is cool, but I think with tweezers check it out there when assembling already so you see what I see if you see this here is one here is the second
but this transformer is also under suspicion, such a darkening on the board does not bode well for us, therefore it is even possible
replacing the conduits will not help, so now I will solder them, I will solder them and we will see what it will give us while I pause on
so all dirty that just horror amanda it was a conder he was discharged everything is fine so it started so far
capacitor changed these here are the rest did not touch on not us not the rest will fall asleep never fly for fun let's throw
those that you file, here we have ours and cheese meter so cleanly see what he will tell us here, in general, here the lid flew out even from the bottom
so it rushed out of r17 m60 microfarad live you see something else, but cheese is such a tin of course
2 look at this one does not tell us anything, maybe he did not get his contacts where needed, but we are here thousands of microfarads
and seven percent of the losses are well per thousand and there are 10 volts of thousands of microfarads, well, this is of course a faulty capacitor, so let's go without
let's put our board and let's not spread the flux here, some new flux came in a syringe poured it liquid like
rosin we are looking for some kind of shit, I just didn’t wash it, I don’t see the point, maybe the monitor doesn’t want to work, maybe it’s
the transformer is already dead now we will throw it on so cleanly, let's see what it will show us if it will show at all
if it doesn’t show something, then we’ll see what kind of transformer there is an irreplaceable transformer clean table
our matrix stores will try to launch this whole thing, so here we have time to get the same time to see my
think they are still fiddling with this, everyone already wants to eat want for a long time everything is normal, you just have to screw this frame to this frame so that he
killed turn it on now and we can do it, maybe an hour on the air, there is no bang, and even as we see something to us
show and does not go out, so I even think that it will work fine, so the guys from him happened to this with the monitor then
do not be alarmed, there is nothing difficult with the help of my video requests you can fix it even without having special skills for myself I
made this so that even a drunkard has some benefit, at least for me, on this all, while successful repairs, subscribe to
Video uploaded by DigitalService
Search DigitalService 2 years ago
How to save money on Samsung 920nw monitor repair. Does not turn on. Such a breakdown is quite common. If you have similar symptoms, then without hesitation, disassemble and change the capacitors yourself. In our case, 10V 1000 ICF and 25V 1000 ICF. Of the tools you need only a soldering iron and a Phillips screwdriver.
Samsung 920NW monitor repair, goes out after 1-2 seconds after turning on. Join the VK group: There are more than 300 photo reports on laptop and monitor repair in the group.
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Video uploaded by DigitalService
Search DigitalService 2 years ago
How to save money on Samsung 920nw monitor repair. Does not turn on. Such a breakdown is quite common. If you have similar symptoms, then without hesitation, disassemble and change the capacitors yourself. In our case, 10V 1000 ICF and 25V 1000 ICF. Of the tools you need only a soldering iron and a Phillips screwdriver.
Samsung 920NW monitor repair, goes out after 1-2 seconds after switching on. Join the VK group: There are more than 300 photo reports on laptop and monitor repair in the group.
How to save money on Samsung 920nw monitor repair. Does not turn on. Such a breakdown is quite common. If you have similar symptoms, then without hesitation, disassemble and change the capacitors yourself. In our case, 10V 1000 ICF and 25V 1000 ICF. Of the tools you need only a soldering iron and a Phillips screwdriver.
Samsung 920NW monitor repair, goes out after 1-2 seconds after switching on. Join the VK group: There are more than 300 photo reports on laptop and monitor repair in the group.
The exact timing of the repair will become known only during the repair itself. The more serious the breakdown, the longer the repair will take.
- We deliver the equipment to the service center: delivery will arrive to you within an hour
- Defining the problem
- We agree on the price with you: we name the price for repairs + cost of spare parts
- We order spare parts from our warehouse
- Chinim
- We check the quality
After repair, the monitor is tested from 2 to 24 hours, depending on the problem. If the problem persists, the monitor will be repaired again.
We repair all famous brands of monitors: Sony, Samsung, Philips, LG, BenQ, HP and many others.
You can find a complete list of models on this page.
- Stripes, spots, ripples, streaks on the screen
- Broken matrices
- Disassembled monitors
- CRT monitors
- We do not change the stands and legs
You can find out about the geography of our trips here
The exact timing of the repair will become known only during the repair itself. The more serious the breakdown, the longer the repair will take.
- We deliver the equipment to the service center: delivery will arrive to you within an hour
- Defining the problem
- We agree on the price with you: we name the price for repairs + cost of spare parts
- We order spare parts from our warehouse
- Chinim
- We check the quality
After repair, the monitor is tested from 2 to 24 hours, depending on the problem. If the problem persists, the monitor will be repaired again.
We repair all famous brands of monitors: Sony, Samsung, Philips, LG, BenQ, HP and many others.
You can find a complete list of models on this page.
- Stripes, spots, ripples, streaks on the screen
- Broken matrices
- Disassembled monitors
- CRT monitors
- We do not change the stands and legs
You can find out about the geography of our trips here
buddy. tell me a similar monik. disassembled and I have a very dark spot near the inverter transformer. the condensers are not swollen. how to check this inverter at all?
exactly the same monitor and the problem went out before at first but worked
please tell me the wiring gray black pink white This is how I understand the backlight them, no matter how to stick it in?
Yes, and drunkards benefit - a bubble of sam and 2 cheese. Class. I suppose they found him in the trash.
please tell me I turn on the monitor for 2-3 seconds on and off. in the screen itself where the lamps are standing there is something bursting. Conders are not swollen what could be?
I changed the same conduits, as well as the R803 resistor, which was burnt out. All the other resistors, conductors and diodes rang, like all the rules, but the fuse burned out, after replacing the fuse, new ones also burn. What could be the reason, what do you think?
