Resanta saipa 135 DIY repair

In detail: resanta saipa 135 DIY repair from a real master for the site my.housecope.com.

Weldig-Zone company carries out repair of inverter welding machines. We repair Resant inverter welding machines of any model.

Resanta SAIPA 135 is a semi-automatic household welding machine. Used in budget car services and in the country. The device is very weak in power, so you should not expect good quality from it in welding. Saipa 135 does not often come to the repair of resant. It is difficult to repair, because many specific details and technical solutions.

Power Supply
Control board

Power supply - repair
Control board - repair

To fill out an application for the repair of the Resant welding machine, please call: 8 (495) 215-17-22

You fill out an online application, call the hotline +7 (495) 215-17-22, +7 (985) 999-56-96 or come to our SC.

You arrange a fence of equipment anywhere in Moscow and the region, or bring it yourself to our service centers: "Tushino", "Shchelkovskaya", "Leninsky", "Ryazansky", "Lyubertsy".

We carry out free diagnostics within 3-4 hours and report its results in any way convenient for you.

We repair equipment, test it, provide a guarantee up to 1 year.

We issue an invoice for payment by bank transfer, or you pay in cash. We provide all the necessary documents.

We deliver the equipment to the specified address, or you can pick it up yourself from any service center.

I ask for help in repairing resant saip 135. Welding does not show signs of life. When checking, 3 diodes on the stth3003 radiator and 2 sgh40n60 transistors are shorted. Resistance 12w 51ohm does not ring out. The question is, is it possible to use more powerful diodes and transistors without modifications.

Video (click to play).

The diodes flew out first, followed by transistors and then resistance,
It is better to put diodes 60A - STTH6003, transistors FGH40N60SMD, There is no need for 135th more powerful transistors, although if there is one in the shoulder, then it may make sense, while nothing needs to be altered

joha, that is, put the same 2 transistors but more help.

joha, burnt out transistors (SFD), as I understood to put (SMD). transistors stand one at the shoulder. diodes 3 pcs, one forward and 2 reverse.

and the board also has free spaces for 2 more transistors and 3 diodes, just empty.

If there is space for additional details, then it is better to add a couple more transistors, More powerful transistors are usually more inhibited, not by much, but still, Better 2 at 40A, FGH is well parallel, SMD is a little faster, FGH at 100g 40A, and SGH at 100g already only 20A,
And add diodes too, 6 pcs can already be 30A, I really always play it safe, I would put all 6 pcs at 60, better at 60,
It will be possible to add a little power to the device, but the transformer is most likely weaker and will be very hot then

joha, well, if without problems with the addition of details, as I understand it, put 2 sgh40n60smd transistors and 3 stth6003cw diodes ?? I seem to have enough power, but it doesn't hurt to increase the reliability.

Konstantin58, by the way, there is still room for one capacitor after the diode bridge. Now there are 2,400v 470mf. Can I add another capacitor of the same kind ?? Thanks in advance for helping me figure it out !! with the repairmen we are bad, you have to delve into it yourself.

Transistors are better than FGH, not SGH, diodes are better than 6pcs of 30, than 3 of 60A, an additional conductor is only good

joha, means 2 fgh40n60smd transistors, 6 stth3003cw diodes, and an additional capacitor ?? Correct if wrong. And what role do these 6 diodes play.

Diodes are an output rectifier

joha, I know that this is a rectifier, but what role does their number and amperes play? So how do you say that it is better to put 6pcs of 30 amperes and not 3pcs of 60 amperes?

Constantin58 wrote:
6pcs for 30 amperes instead of 3pcs for 60 amperes

in the first 30 amperes a little faster (not the most important thing), and secondly, the same power will be distributed over a larger number of cases, you can, for example, put 2 straight lines at 60A, and 4 reverse ones at 30,
I really would have put all 6 pieces for 60A (I love the stock), not much and it will turn out more expensive

Sorry that I am asking with passion, I just want to assemble the welding so that it can still work. Summing up, put 2 fgh40n60smd transistors and 6 diodes either 30a or 6 60a each. It depends on which ones will be on sale. Thank you very much for your help.

so I want to ask a little more. the situation is such, thick metal is cooked normally at high currents, but it is very disgusting to cook a tin can at low currents. welding is constantly pushed into the torch, the arc is not stable and often interrupts spontaneously. just as often you poke into the metal and the wire just turns red and the arc does not ignite, especially it bothers me very much, as if the contact is somewhere somewhere, but I checked everything, and nothing helps. the feeling is lacking in the softness of welding at low currents. may have some thoughts about this.

Constantin58 wrote:
so I want to ask a little more. the situation is such, thick metal is cooked normally at high currents, but it is very disgusting to cook a tin can at low currents. welding is constantly pushed into the torch, the arc is not stable and often interrupts spontaneously. just as often you poke into the metal and the wire just turns red and the arc does not ignite, especially it bothers me very much, as if the contact is somewhere somewhere, but I checked everything, and nothing helps. the feeling is lacking in the softness of welding at low currents. may have some thoughts about this.

1

copich 29 Jun 2017

what else should be checked in this welder.

- PWM circuits and power swing (i.e. swing fgh40n60sfd)

Actually, the remaining fgh40n60sfd, the fact that they are not in the short, does not mean that they are alive.

Without the connected power, check the operation of the auxiliary power supply and see what the oscilloscope shows on the power gates. Oscillograms should be similar, but at the same time correct, Otherwise, the next BABAH in 80-90% is guaranteed (since the force is in short circuit)

Study 29 Jun 2017

And personally I am interested in whether the author soldered these elements or checked them directly on the printed circuit board. It’s just not enough, to bring, let's say, clarity and naturally I don’t think anyone is a fool.
I am just proceeding from my own limited experience. I find faults with grief in half, but I don't go into circuitry.

Constantine58 29 Jun 2017

Let's start with the fact that I live in a small town and we don't have any repair shops as such. I myself have little knowledge in electronics. Of course, there is no trace of the oscilogroph and cannot be found. proceeding from this, you will have to repair yourself, and so to speak on your knee !! there is an opportunity to get different transistors and diodes and of course resistors, but there is no one to help with the repair. that's why I'm writing on the forum because here people have at least knowledge and skills !! Now on the topic: in the welder there are 2 fgh40n60sfd transistors and 3 stth3003cw diodes, but there are empty spaces for 2 more transistors and 3 diodes. there is a gp35 sticker on the board. I checked all sorts of resistors, diodes, capacitors, everything rings and is checked as needed with a multitester.checked after soldering the transistors.

tehsvar 30 Jun 2017

Constantine58 30 Jun 2017

Study 30 Jun 2017

Diodes ring all 3 for short circuit and transistors too. What's wrong?
But I haven't soldered the diodes yet, I checked them right on the board.

To begin with, you will eliminate the short circuit on the board completely. Then write where and what exactly was pierced or in the cliff. Preferably with a photo. And again, do not forget that in the case of a shorty in the power section, the low-voltage section may also be damaged and not sickly.

SergDemin 30 Jun 2017

But I haven't soldered the diodes yet, I checked them right on the board.

Constantine58 30 Jun 2017

copich 30 Jun 2017

They pounced on. How can and fixes. What is the problem?

Secondary diodes, all stand in parallel. So tehsvar and asked again. It surprised me too. But this is not important for me in the initial examination.

Usually one of the lights is on. The rest must be alive.

And you can check without unsoldering, these are transistors. Diodes. Well, as luck would have it, either immediately the first or he will be the last to drink

But since they are in parallel, then we must look for a spy.

Power transistors. Well, yes. I thought it was an inverter. and this is so - a charger for the phone. Didn't look at the maximum current. That is why there are only two power transistors.

If they are both corpses, then you need at least from a sound card, but make an oscilloscope. Most likely, the signal from the control will go in a curve, if it does. And if the signal is not correct, then it will surely flash new transistors.

Constantine58 30 Jun 2017

copich 30 Jun 2017

the main thing is 40n60. The difference between letters - affects the parameters. Study the datasheet. What parameters will be critical, you decide. It can affect the type of housing and the thermal parameters and the rest. If you can think of something else with the case, but if the parameters are underestimated, then not very much. Those. eg thermal range.

2x15A, put 2x30A - a good replacement. But this is only for current. Did the current knock them out? Well, they will work a little slower. After replacement, it is necessary to turn on the maximum speed and look at the temperature. If the rectifier does not warm up, it will work.

Post has been edited by copich: 30 June 2017 11:34

Constantine58 30 Jun 2017

but I also wanted to ask, without soldering the diodes from the board, it is possible to ring them with a multitester, just now they all call as a short circuit. transistors dropped out and they are exactly in short circuit, but about stth3003cw diodes is not clear. are all 3 diodes also closed.

Study 30 Jun 2017

I'm sorry in advance. You can bite off one of the conclusions.

I was once asked at school to fix a fire alarm. Replacing defective elements in the removal with serviceable ones, for some reason it did not work. At the end of the window it turned out that some agent had soldered the transistor on the wrong side. Just think of the drain and change the source in places. Well, the circuit was powered by 12V, and here in high volt 400, it's scary to think about the consequences.

Constantine58 30 Jun 2017

so all the same, the diodes on the board without soldering can be ringed or not. or be sure to solder and check each one.

Study 30 Jun 2017

so all the same, the diodes on the board without soldering can be ringed or not. or be sure to solder and check each one.

You need to look at the diagram, tell the numbers.

dmitrov 01 Jul 2017

so all the same, the diodes on the board without soldering can be ringed or not. or be sure to solder and check each one.

if the diodes are alive, then there should not be a short circuit, and if it shows a short circuit, then at least one is broken and you can't do without soldering

Konstantin58 01 Jul 2017

Study 01 Jul 2017

Thanks everyone for the advice and guidance. It turned out that the transistors are in short circuit, 2 out of 3 diodes are also in short circuit, and the resistance of the soft start 12w 51 is burned out. In the store, transistors and diodes are exactly the same as I do not have, transistors differ in letters at the end (sfd are my old ones, but I bought smd) and stth6003cw diodes are old 3003, how critical is this ??

The ones you bought are a little faster. In my opinion, it is not critical.

I bought this unit for bodywork. The length of the welding torch is well compensated by the size and weight of the device; you can crawl into any place of the car. This device works for me in tandem with a five-liter carbon dioxide cylinder connected with a 4 meter long hose and a 9 mm nozzle. A 9 mm nozzle allows you to weld body metal at a minimum current with a minimum feed with a neat seam without burning and lack of fusion with a 0.8 mm wire.
As standard, the device is equipped with a 12 mm nozzle.

For commercial volumes, the device will not be very convenient, since only a kilogram coil of wire (d100) can be installed in it.

Immediately after the purchase, the device "shit" and did not obey the adjustments. The problem lay in the button on the torch. There are two contacts in the form of two metal plates, on one of them the terminal did not hold well. He squeezed the terminal, fixed the contact group and everything is fine.
The gas supply is also realized through the torch trigger, there is a mechanical valve. The mechanism is designed so that the device has a preliminary gas supply, that is, you press the button and the gas supply is turned on. You press harder and the wire feed begins.

This device can also cook with an electrode, which is convenient.

Once the Resant SAI 250PN welding inverter fell into my hands. The device, without a doubt, inspires respect.

Those who are familiar with the device of welding inverters will appreciate the power of the electronic filling.

As already mentioned, the filling of the welding inverter is designed for high power. This can be seen from the power section of the device.

The input rectifier has two powerful diode bridges on the radiator, and four electrolytic capacitors in the filter. The output rectifier is also complete with: 6 dual diodes, a massive choke at the output of the rectifier.

three ( ! ) soft start relay. Their contacts are connected in parallel to withstand the large current surge when welding starts.

If we compare this Resanta (Resanta SAI-250PN) and TELWIN Force 165, Resanta will give him a dashing head start.

But, even this monster has an Achilles heel.

The cooling cooler does not work;

There is no indication on the control panel.

After a cursory inspection, it turned out that the input rectifier (diode bridges) turned out to be in good order, the output was about 310 volts. Therefore, the problem is not in the power section, but in the control circuits.

External examination revealed three burned out SMD resistors. One in the gate circuit of the 47 Ohm field-effect transistor 4N90C (marking - 470), and two at 2.4 ohms (2R4) - connected in parallel - in the source circuit of the same transistor.

4N90C bipolar transistor (FQP4N90C) is controlled by a microcircuit UC3842BN... This microcircuit is the heart of the switching power supply, which powers the soft-start relay and the integrated stabilizer at + 15V. He, in turn, feeds the entire circuit, which controls the key transistors in the inverter. Here is a piece of the RESant SAI-250PN diagram.

Read also: DIY car DVR repair

It was also found that there is also a resistor in the power circuit of the UC3842BN (U1) ShI controller in the open circuit. In the diagram, it is designated as R010 (22 ohm, 2W). It has the reference designation R041 on the printed circuit board. I will warn you right away that it is quite difficult to detect a break in this resistor during an external examination. A crack and characteristic burns can be on the side of the resistor that faces the board. This was the case in my case.

Apparently, the cause of the malfunction was the failure of the UC3842BN (U1) ShI controller. This, in turn, led to an increase in the consumed current, and the resistor R010 burned out from a sharp overload. SMD resistors in the FQP4N90C MOSFET circuits played the role of a fuse and, most likely, thanks to them, the transistor remained intact.

As you can see, the whole switching power supply unit on the UC3842BN (U1) has failed. And it feeds all the main units of the welding inverter. Including soft start relay. Therefore, welding did not show any "signs of life."

As a result, we have a bunch of "little things" that need to be replaced in order to revive the unit.

After replacing the indicated elements, the welding inverter turned on, the display showed the value of the set current, the cooling cooler clinked.

For those who want to independently study the device of the welding inverter - the complete schematic diagram of "Resant SAI-250PN".

If the relay does not work, it will only spark.
The whole chain is +12 and check the fans, relay control, most likely not only this diode burned out.

Observing the polarity, I feed 12 V directly to the relay, a clatter is heard. Is the key transistor alive?
Check the 220 uF capacitor for ESR.

0808andrew,
"Is the key transistor alive?" - do you ask or approve?
Check EVERYTHING! The relay should work not only when external 12 volts are supplied, but when the inverter is turned on. If this does not happen, then there is a malfunction somewhere, then it must be found.

Apply voltage not directly to the relay, but as according to the scheme, minus to the case and plus to the anode of D08, after having unsoldered it (anode), will the relay work?

According to the given diagrams, this semiautomatic device is a conventional oblique bridge. The control unit works out the stabilization of the output voltage according to the signal taken in the circuit from the power output circuits to the output choke. The algorithm for processing the output current change by the control unit according to the principle of imitating a choke at the output of a conventional “iron” semiautomatic device is absent (if you understand the circuit correctly). But there is a working off of the short-circuit current limitation at the output when the conditions for exceeding the current of the power unit coincide with a simultaneous decrease in the output voltage. Also implemented are the protection for the supply voltage, etc.

It would be desirable to see high-quality photos of the inverter itself.

It doesn't really mean that it’s great, the defense just didn’t work so aggressively. It turned on (with protection, as I now understand there were problems initially) and during the work itself there were no problems, even once it came to the correct operation of the protection during operation, during the test of the first amplifier bad transistors of the output stage came across, naturally during operation they decided to die.

I correctly found that the gate capacitance of the transistors in the circuit should be 1.3 nF? In my case, it is 2.2 nF, and the resistance of the open channel is a bit more, by 0.1 Ohm. As I understand it, it doesn't smell like authenticity. The increase in resistors R16 and 17, give the proper effect only probably on protection, began to start with a 90 W lamp on both shoulders, but if you also add loads (added a 60 W light bulb), the protection still works after the relay. No significant changes are observed on the oscilloscope. The needles, as they were, are, well, maybe quite a bit smaller. I tried from 40 to 100 ohms (22 was already there).

Can any field-effect transistors be put into this circuit? The main thing is that they are for a voltage of more than 400V and N channel? (But preferably more)

Resanta SAIPA 135 - repair of the welding inverter in the service center. We repair any welding equipment and deliver free of charge. All details on
What you will learn from our video:
We repaired the Resant SAIPA 135 welding inverter. See our video for what methods were used and how they were diagnosed.

We are waiting for your comments, questions and likes!
Subscribe to our channel.
We are also waiting for you in our VK group

ON A NOTE!
The quality of welding depends on many factors - from the professionalism of the welder to the reliability of the equipment. And if your employees show excellent results when working with other welders, then it's time to think about repairing a welding inverter. After all, it is the low quality of welding that indicates the presence of breakdowns in the welding equipment.

#welding #inverter_repair #inverter_welder_repair # semi-automatic_kemppi #repair_welding #welding_repair #welding_repair #repair_welding_equipment #welding #welding_apparatus
# welding_apparatus_repair # welding_inverter_repair
# welding_semi-automatic # welding_semi-automatic_kemppi # kemppi # repair_semi-automatic # repair_welding_semi-automatic
# diagnostics_welding_equipment #inverter_resant_say_250
#resanta_sai_250 #resanta_sai_250_repair # welding_apparatus_resanta_sai_250
#welding_inverter_resant_sai_250
# welding_resant_sai_250
# EWM_Pico_162
#plasma_repair
# Welding_apparatus_EWM_Pico_162
#blueweld_prestige
#welding_inverter_blueweld_prestige
# blueweld_prestige_164
#lincoln_electric
#lincoln_electric
#semiautomatic_lincoln_electric
#telwin
#welding_apparatus_cedar
#inverter_fubag
#brima_tig
#brima
#tig
#welding_inverter_brima
# Lincoln_Electric_Invertec_V205
#Selco_Genesis
#welding_gysmi
#gysmi
# neon_vd_201
# inverter_neon
#semiautomatic_telwin_bimax
#resanta_saipa_165
#welding_apparatus_foxweld
# welding_apparatus_for and furious
#semiautomatic_telwin
#welding_inverter_foxweld
# welding_inverter_orus
# aurora_speedway_175
#svarog
# aurora_overman_180
#blueweld
# torus_200

Video of Resant SAIPA 135 and its repair in the service center | Zona-Welding.RF repair of welding machines of the Zona Welding.RF channel

It doesn't really mean that it’s great, the defense just didn’t work so aggressively. It turned on (with protection, as I already understand there were problems initially) and during the work itself there were no problems, even once it came to the correct operation of the protection during operation, during the test of the first amplifier bad transistors of the output stage came across, naturally during operation they decided to die.

I correctly found that the gate capacitance of the transistors in the circuit should be 1.3 nF? In my case, it is 2.2 nF, and the resistance of the open channel is a bit more, by 0.1 Ohm. As I understand it, it doesn't smell like authenticity. The increase in resistors R16 and 17, give the proper effect only probably on the protection, began to start with a 90 W lamp on both shoulders, but if you also add loads (added a 60 W light bulb), the protection still works after the relay. No significant changes are observed on the oscilloscope. The needles, as they were, are, well, maybe quite a bit smaller. I tried from 40 to 100 ohms (22 was already there).

Can any field-effect transistors be put into this circuit? The main thing is that they are for a voltage of more than 400V and N channel? (But preferably more)

For many products, to work with Resant SAIPA-135, you may need various additional files: drivers, patches, updates, installation programs. You can download online these files for a specific model of the Resant SAIPA-135 or add your own for free download by other visitors.

If you did not find files and documents for this model, then you can look at the instructions for similar products and models, since they often differ in small changes and are complementary.

Be sure to write a few words about the product you purchased so that everyone can read your review or question. Be active so that as many people as possible could find out the opinion of real people who have already used Resanta SAIPA-135.

Text describing the characteristics of the device.

How to choose an inverter type household welding machine? There are dozens of brands and thousands of models of welding inverters in Russia, most of which are household ones. We, in Silovik stores (power equipment), also ask ourselves the question: what to recommend to customers so that they like the device not only in the window, but also three years after purchase. To avoid not only warranty breakdowns, but also in 5 years, you would not have to buy a new device for home use. This technique has existed and for more than three years we have been choosing welding machines from suppliers using this particular technique. Only three tests need to be carried out, here is the first one: we measure the welding current at normal voltage and compare it with the selling price of this machine. Welding passports are unlikely to help us, since manufacturers in most cases overestimate the technical characteristics. This requires special equipment. In the test - four popular household welding machines: Resanta SAI 250, Kedr MMA 220, FUBAG IR 200, Redbo Black 204

Why can't a person find the videos they want on Youtube? The thing is that a person cannot come up with something new and look for it. He was out of fantasy. He has already watched a lot of various channels, and he no longer wants to watch anything (from what he watched earlier), but what to do in this situation?
In order to find a Youtube video that suits your needs, it is imperative to keep searching. The harder your search is, the better your search result will be.
Remember that you only need to find a few channels (interesting), and you can watch them for a whole week or even a month. Therefore, in the absence of imagination and unwillingness to search, you can ask your friends and acquaintances what they are looking at on Youtube. Perhaps they will suggest original vloggers that they like. You, too, may like them, and you will become their subscriber!

Online mp3 cutting is convenient
and a simple service to help you
create a musical ringtone yourself.

YouTube video converter Our online video
the converter allows you to download videos from
YouTube website in webm, mp4, 3gpp, flv, mp3 formats.

These are radio stations to choose from by country, style
and quality. Radio stations all over the world
over 1000 popular radio stations.

Live broadcast from webcams is made
absolutely free in real
time - broadcast online.

Our Online Television is more than 300 popular
TV channels to choose from, by country
and genres. Broadcasting of TV channels is free.

A great opportunity to strike up a new relationship
with a continuation in real life. Random video
chat (chat roulette), the audience is people from all over the world.

Hey ! I have the same resant and also this resistor does not work, no where in our city can I find it, give me advice on what can be replaced or can a jumper be installed?

Degeg Enough, if the resistors are the same, then when connected in parallel, the power will add up. when connected in series, the power will be equal to the power of the lowest power resistor in the chain. if it's oversimplified.

+ Screw and Shpuntik resistance is clear how to gain resistance, but do they also play a role in cotton wool? I am just a welder and not an electrician, but when I need to think about it in a reasonable amount of knowledge. Thanks for the answer !

You don't need a jumper at all. You can pick up a little different, more power, or connect several.

Good afternoon, Vintik and Shpuntik, tell me please purchased a semiautomatic welding machine spark inventory pdg 240 and a very high welding voltage when welding thin metal I would like to reduce it, is it possible to do it somehow

Once upon a time there was exactly the same problem)

Homokapacitors fly out with a reduced mains supply or operation from a generator, the same way it was put in an increased capacity and proprietary Tesla ones.

Show control panel

Hey ! I have the same resant and also this resistor does not work, no where in our city can I find it, give me advice on what can be replaced or can a jumper be installed?

You don't need a jumper at all. You can pick up a little different, more power, or connect several.

Once upon a time there was exactly the same problem)

Homokapacitors fly out with a reduced mains supply or operation from a generator, the same way it was put in an increased capacity and proprietary Tesla ones.

Video (click to play).

Rate the article:

Grade 3.2 who voted: 82