audiostar Posted May 22 Report Share Posted May 22 10 hours ago, demonkuro said: Thank you for your concern, before connecting the PSU to AMP, I let it work independently for several hours, all the output voltages are right, the drift is very small, and it looks very stable. So I confidently linked it to AMP, but nothing good happened... Just like the carbon I made 8 years ago, the PSU also exploded, and that time I replaced the damaged part and it worked fine. Thanks to your advice, I will go find an insulation tester to test each power supply. I should be more cautious.The PSU was tested today and luckily all worked fine except for -500V and +500V.Waiting for new parts and replace the wire with a higher withstand voltage rating. Before you go deep into the rabbit hole with insulation testing, first you check extremely careful all connections through the umbilicals to the amp boards by continuity. Then you load test the PSU with some resistors, do insulation testing and all the other fancy things. Quote Link to comment Share on other sites More sharing options...
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