So, what should be done, first of all, when repairing a GYSMI 131 welding inverter? Take out the device. turn it on in diode continuity mode. and poke into the welder's output connectors. If it rings like a diode, then everything is fine. that is, it may not be all right, but this is no longer our defect, but if it rings (or beeps?), this is already our defect, most likely the diode in the output bridge unit is broken. In this case, it was either a diode or half a diode, since they are composite.
This is how it looks inside.
The SMI board of the power module is glued to the heatsink and the whole structure is soldered to the main board. We are just interested in the SMI module. However, it is in this welding machine that it is quite easy to solder it out of the board using an ordinary suction and a 100 watt soldering iron, which we will do.
We solder the power module from the board, all further operations will be performed with it.
First you need to find a broken diode, and for this you need to unsolder at least the outputs of the diodes without soldering them entirely. But it is almost impossible to perform any kind of soldering operations with cold parts - the radiator simply will not allow them to warm up.
To solder or solder parts to the power unit, you need to warm up the radiator. You can use this device for this.
We install the power module on the grill, turn on and heat the radiator to 120-130 degrees, controlling the temperature with a thermocouple. It is not worth heating higher.
After that, turn off the heating, wait until everything cools down, clean, wash. that is, ugh. we wash and solder the power module back to the board. Now you can collect everything, check it again, ring and you can turn it on. It turned on normally, the output voltage is normal, we try to cook. If everything is done carefully it will work, but there are pitfalls here.
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Welding machines Gysmi 131 - economy class MMA inverter welding. The device is very afraid of voltage surges, overheating, carrying. The most common failure is the IMS module. Our company repairs IMS modules.
VIDEO 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.
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Welding inverter Gysmi 165 repair in the service center. More examples on Welding Zone:>
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Today, welding inverters are a fairly common type of similar apparatus, which can increasingly be found among many owners. However, at a certain moment, this equipment may fail, which makes one think about repairs.
Moreover, in this case, it is not necessary to contact specialists; in some cases, you can return the welding machine to working condition on your own. The main thing is to know what exactly led to the malfunction and how you can eliminate it yourself without incurring unnecessary service costs.
high quality welding , which can be provided by any person who does not have sufficient skills in handling it. At the same time, the operating conditions of this unit themselves are distinguished by a high level of convenience.
It should be mentioned that this equipment has a more complex design when compared with welding rectifiers and transformers. This, in turn, negatively affects their reliability. It should also be said that the predecessors listed above are electrical devices. In contrast, inverter devices are one of the varieties of complex electronic devices.
For this reason, if the owner is faced with malfunctions in the operation of the welding inverter, in order to find the cause of the malfunction and carry out the repair itself, it is necessary to make sure that its constituent elements are working: diodes, transistors, zener diodes , resistors, as well as other elements of the inverter electronic circuit. You should also be prepared for the fact that the user will be faced with the need to use devices such as a voltmeter, digital multimeter, as well as other ordinary measuring equipment, including an oscilloscope.
In such a situation, the owner has no choice but to take turns check each element of the circuit ... Therefore, in order for the repair to justify the efforts and time spent on it and to ensure the necessary result, the owner of such a device must have certain knowledge of electronics, as well as at least minimal skills in working with electrical circuits.
If he does not understand this plan, then, having decided on an independent repair of the inverter welding machine, he only risks wasting time in vain, without having achieved his goal. It is possible that his initiative may worsen the operation of the device, and the actions performed by him will cause new problems.
If we consider all the problems that are diagnosed during the operation of welding inverters of any type, then they can be classified into several groups:
malfunctions resulting from an illiterate choice of the welding operating mode;
malfunctions caused by a malfunction or improper operation of the electronic components of the equipment.
Regardless of the nature of the malfunction, such a situation will not allow the owner to continue welding in the usual mode. Various factors can cause a malfunction in the operation of the welding inverter. To determine the exact cause, it is necessary to check each of them in turn, and at the beginning they start with simple operations and gradually move on to more complex ones. After carrying out all the recommended diagnostic procedures, it may happen that the welding machine is still inoperative. In this case, it can be assumed that the problem is related to the inoperative electrical circuit of the inverter module. The most common failure of an electronic circuit occurs for the following reasons:
In the event of dust accumulation under the housing, favorable conditions arise for disrupting the correct cooling of the components of the electronic circuit. Equipment used on construction sites is most often at greatest risk of contamination. To prevent damage to the inverter under these operating conditions, clean it regularly.
Disregard of the manufacturer's recommendations regarding the proper use of the inverter without interruption.This can also be one of the causes of malfunctions in the operation of the electronics of the equipment, arising against the background of its overheating.
Usually, inverter devices fail due to external factors, as well as incorrect settings and neglect of the recommendations for using the device. Among such situations, the following can most often be observed:
A burning odor from the cabinet of the unit may be a sign of a serious problem with the inverter module. In such a situation, the best solution would be service call ... To fix such a malfunction with your own hands, the owner must have certain skills and knowledge.
Therefore, in such a situation, return the device to working condition. can be by soldering ... At the initial stage, you need to try to find out which elements are out of order. This may be indicated by cracks, dark spots on the case, or signs of burnout on the terminal board, as well as swelling of the top of the electrolytic capacitors.
After it was possible to establish the faulty nodes, they must be evaporated, then replaced with parts identical or similar to them in terms of characteristics. When choosing replacement parts, pay attention to the markings on the body, or use tables. When removing damaged elements, it is recommended to use a soldering iron with suction. This will allow you to complete the work with a minimum amount of time and avoid serious problems.
In some cases, the survey may not produce results. In a situation like this, it makes sense to start ring out elements using an ohmmeter or multimeter. Transistors have the lowest level of protection. For this reason, during the repair of the device, it is necessary first of all to examine them and check their operability. Most power transistors are highly reliable. And if, nevertheless, they turned out to be faulty, then the most often favorable factor for this is the failure of the elements of the "swinging" their circuit. The elements of the latter must be checked at the very beginning. After completing the check, it is necessary to subject the nickname and other elements of the board.
When examining the board, attention should be paid to the state each printed conductor where you need to make sure that they do not have breaks and burns. If burnt areas were found, they must be removed and the jumpers soldered. This operation is performed by hand in the same way as in the case of damage to the PEL cable. If necessary, then the contacts of each of the connectors present in the device should also be checked. In some cases, they will need to be cleaned.
Inverter welding machines can greatly simplify the welding procedure for various products. The failure of this equipment can upset any owner. However, you should not contact the service center specialists ahead of time. In some cases, you can return the device to a working condition with your own hands. Often this equipment has quite simple faults that can be easily eliminated. The main thing is to clearly understand what exactly led to the failure of the device and how to properly repair it.
VIDEO Any Gysmi welding inverter is manufactured in France at the GYS plant in Laval. Today, welding equipment under this brand can be safely called the most democratic in price of all machines manufactured in Europe.
GYS was founded in the mid-1960s. For a long time, she worked exclusively to meet the domestic needs of French consumers for reliable and modern welding machines. But in the new millennium, the company began to actively explore the world market.
At the moment, it sends about a third of its welding equipment to other countries. A lot of inverters are delivered to our country as well.
At first, domestic consumers reacted with great enthusiasm to the appearance in our specialized stores of welding equipment under the brand name "GYS". They were impressed by the fact that it was produced using an innovative technology called “IMS”. Its essence is that any welding machine of the described brand had a single board located on the massive aluminum case of the inverter. Due to this, the welding equipment of the company is a compact unit with an ideal (without exaggeration) ratio of geometric dimensions, weight and productivity.
The boards are directly mounted on the device in a complex high-tech production, where all assembly operations are performed without human intervention by robotic machines. Electronic boards have a high level of reliability, each of their components is repeatedly checked, so the quality of the finished product "GYS" can be considered impeccable. But, as you yourself understand, any equipment breaks down during operation. This is where the main disadvantage of the considered welding inverters lies.
The fact is that if a high-tech board fails (and this will happen sooner or later), it is impossible to repair it. There is only one way out - to buy a new card, install it on the device and continue using it again. The trouble is that the cost of this very electronic board is comparable to the price of the entire welding inverter. In fact, when it breaks down, we are not talking about repairing existing equipment, but about buying a new one.
Generally speaking, this would not be a big problem if the “GYS” equipment worked without interruptions for a long time. But in recent years, the company has tried to reduce the cost of its units as much as possible, meeting the wishes of customers. The result of this decline was a decrease in product quality. She began to break much more often.
If you have looked after yourself, for example, the Gysmi 161 apparatus, which is popular with Russian welders, or the equally demanded Gysmi 131, be prepared for another problem related to their operation. Their efficiency is not as high as consumers would like. At the highest permissible loads, the break time during welding for them is at least 70 percent, and at rated loads, you can use, say, the Gysmi 165 inverter, no more than half the welding cycle.
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This device makes it possible to carry out manual arc welding on direct current. The Gysmi 161 works with welding rods with a cross section of 1.6-4 mm. The unit is distinguished by its stable operation during voltage surges, low consumption of electrical energy, and compact dimensions. These factors contributed to the popularity of the Gysmi 161.
The inverter has a special mechanism with a built-in fan, which protects the unit from thermal overloads. It is especially in demand among inexperienced welders who experience difficulties in operating other welding installations. With the Gysmi 161, you will not have problems with arc striking and sticking welding rods, as the inverter has “HOT START” and “ANTISTICKING” functions.
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Another model popular in Russia from French engineers is an apparatus with a microprocessor for performing welding operations using TIG and MMA technologies. Gysmi 165 (now it is being implemented in a new modification - Gysmi e160) has all the modern functions that facilitate the welding process. The highlight of the Gysmi e160 is that the “Hot start” function in it is not fixed, but adjustable. If you consider yourself an experienced welder, the Gysmi 165 inverter will be the best unit for you.
Below we present its key technical parameters:
dimensions - 12.5x28x20 cm;
supply voltage - from 190 to 260 V;
idle (voltage) - 72 V;
primary current (highest) - 23.6 A (with argon-arc welding), 33.5 A (when using consumable rods);
unit weight - about 4.6 kg.
The welding current for the Gysmi 165 is 10–160 A, regardless of the mode used. I would also like to note the presence of a digital display on the front panel of the Gysmi e160, on which you can observe the parameters (changeable) of the welding process. This monitor simplifies the operation of the welding machine. Thanks to this, the Gysmi e160 can be easily handled by both a real pro in his field and a green beginner who is mastering the wisdom of modern welding.
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This small in weight (less than three kilograms) device is optimal for domestic use. It uses electrodes with a cross section of no more than 3.25 mm, makes it possible to carry out manual electric arc welding even to a person with minimal training, while guaranteeing a high quality of the welding process. Gysmi 131 is a functional unit that you can operate from time to time, performing simple welding of metal sheets and products.
Like all inverters from GYS, the Gysmi 131 is packed with all the standard features to make it easy to use. The unit is not afraid of a drop or increase in voltage in the power grid, it is protected from overheating due to the presence of an elementary ventilation device. The main thing is not to forget that the Gysmi 131 should be regularly allowed to “rest” during large-scale welding activities, otherwise its electronic board simply will not withstand excessive stress.
The main characteristics of this model of GYS welding inverter are as follows:
welding current - from 10 to 130 A;
voltage - 230 V (± 15%);
dimensions - 10.5x23.5x17.5 cm;
current (primary) - 28.8 V.
Video (click to play).
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