Repair of an extremely low cost inverter. No output voltage.
Пікірлер: 45
@repairlab142 жыл бұрын
If you enjoyed this video please like and leave your comments! Share this video with your friends! Thank you!
@user-uc4jd7yo9qАй бұрын
Здравствуйте. Этот канал для англоязычных)
@khizarali89Ай бұрын
Very nice video
@shannosilva81347 ай бұрын
Buenas tardes “ Señores muy buenos sus videos; solo le falta es grabarlos con audio ; ya q es fundamental el audio para interpretar mejor el video; muchas gracias
@ajithp27142 жыл бұрын
Superb work bro. Please upload more videos on welding machine repiring.
@ttkoh123 Жыл бұрын
Regarding the 4 places, I think it is for either 2 IGBT or using 4 mosfets selection choices.
@flacoanemico5199 Жыл бұрын
I have looked at data sheets and diqgrams and no info on correct voltage at shutdown/soft start pin. Thanks for sharing the info. 👍
@repairlab14 Жыл бұрын
Vref 5V
@abdellahzaidi1257 Жыл бұрын
عمل جيد. شكرا على الفيديو.
@bernardobustos15542 жыл бұрын
excelente video... tengo un problema parecido en el pin 8 tengo 7.8v y no arranca el integrado... ya cambie los dos trasistores y revise todas las resistencias... no puedo encontrar el programa
@repairlab142 жыл бұрын
On pin-8 must be 5 volts, same as vref. Replace 3525.
@bernardobustos15542 жыл бұрын
@@repairlab14 ya lo cambie pero persiste el problema....... gracias por responder
@alexanderdevia417 Жыл бұрын
Gracias, no tenìa voltaje de referencia del pin 8 del SG3525, para futuras reparaciones
@user-ld7qj7ho7z2 ай бұрын
How many voltage out this plant
@ghosttowncrawler36132 жыл бұрын
Nice!
@manjunath77756 ай бұрын
Hello bro,i changed all 8050 ,zener,6.2k ,22k resistor but i am getting 0.8v at 8pin of 3525 what could be yhe Resason,should I remove IC because that only left to change now
@UlisesElMagnanimo Жыл бұрын
I have the same welder and I have 67 volts at the output but it has no current. The output diodes and triacs are fine, the sg3525 works correctly. I don't know where to look anymore
@repairlab14 Жыл бұрын
Maybe operational amplifier LM358
@madank.r1346Ай бұрын
BRO Q1,Q2,Q3,Q4 TRANSISTER VALUE?
@albertogasca25157 ай бұрын
thanks
@MohammedLamini-ob9go8 ай бұрын
i love that
@jennybrown5726 Жыл бұрын
Boss what is problem for inverter welding machine 200a,250a,300a, after I change the four igbt, and I check the output voltage is 90vdc, when I test the sparking, immediately the igbt will explode back, sir what is the cause sir?
@AutodidactEngineer Жыл бұрын
I recently got a Kzubr 400N MMA single phase stick welder which claims to (input 220v-36.6A stable, up to 47.6A max input)output 400A lol. Anyway it seems to be built solid and after further inspection I found that the real output is actually 200A which is still awesome considering I paid 120€ for it. Anyhow I have taken it apart and examined it and the insides look pretty identical but instead of the ground and stinger bars that are made of aluminium in the one shown in the video mine has them made of copper which was nice to see. Anyhow what do you think the life expectancy will be of my machine?
@repairlab14 Жыл бұрын
Depends on your luck. )))
@akamasseganhoutode9694 Жыл бұрын
Bonjour
@daliborjukic7039 Жыл бұрын
Hello I have the same problem on my mma 250 igbt welder. Pin 8 was reading low and I've removed j3y smd transistor and now it works. Should I wait for replacement transistor arrives or can I work with welder? Thank you
@repairlab14 Жыл бұрын
Yes, you can
@pv.chalapathirao45812 жыл бұрын
ThankyouSir🙏🇮🇳
@mohamadraja55492 жыл бұрын
सर आवाज केसाथ वीडीयो बनाईये लीखने का तरीका भी चालु रखे आप जेसे लोग दुनीया मे कम मीलते है जो दुसरो को काम आते हैं
@repairlab142 жыл бұрын
Thank you. I am in the process of learning the language, in the future the videos will be with voice.
@lucasrocha4329 Жыл бұрын
I have a welder machine which there is not output voltage. I tested 2 IGBT = Ok, 4 Diodes = Ok, 3 Polyester caps ok, 2 with 4.7 uF and 0.02 Esr and other 400v with 4.7uF and 0.03 Esr. Bridge rectifier is Ok. But, i haven't square waves in gate of 2 igbts. Thre wave it's similar to a part of senoid. Is the module the problem ?
@repairlab14 Жыл бұрын
Sometimes the IC on the control board fails on its own.
@lucasrocha4329 Жыл бұрын
@@repairlab14 The fan try to rotate . However, it moves too much small and i don't have 24v in this line.
@repairlab14 Жыл бұрын
@@lucasrocha4329 A short circuit on the 24V line and the power supply does not start due to overload, or the IC is powered off from the secondary circuit
@wallization10 ай бұрын
Hi RepairLab14, do you have the diagram for this welder? thanks in advance
@imagination21419 ай бұрын
I have mesin welding .no out put how to refair
@patelrajeshbhai99092 жыл бұрын
Good
@smoke_stackz3168 Жыл бұрын
I got the problem it sparks but too weak
@balaramvishwakarma32532 жыл бұрын
Hii can you share 400amp welding machine control card circuit diagram ???