Re: Power supply issue with H240AS-00.

Hello.
I am attaching a photo of the main FET.
Despite the unhealthy appearance of the front capacitor, I measured it and it is healthy (I replaced it, the behavior of the circuit is the same).
Photo of the small board behind the main FET. It is before I changed the PWM chip. I don't have time to desolder and take pictures right now. I measured all the diodes and resistances in the signal path to the gate of the FET everything seems normal. This is what my pocket oscilloscope shows. The readings of the unit are while...

Hello, everyone.
The power supply had the standard problem, a blowout in the snubber circuit. I recovered everything from it. Q51, IC301 is also rebuilt. The power supply works, but when I hook it up to work on my power supply tester [URL="https://www.amazon.com/Computer-PC-Tester-Connectors-Enclosure/dp/B076CLNPPK"]https://www.amazon.com/Computer-PC-Tester-Connectors-Enclosure/dp/B076CLNPPK[/URL], the Q51 starts to gradually heat up and after about 30 minutes it's hard to keep your finger on its heatsink. The other radiators are ice cold and so should be no load in out. All...

Re: New Members - please post your introductions here

Hello. My name is Teodor, I am 32 years old and I am from Bulgaria. My hobby and passion is electronics and I hope with your help I will have more and more knowledge. Thanks for the reception. Greetings to all!