Hey guys I’m looking at this punch 800a2 board here the problem is there 54.14vdc at both channels. I was in the works of repairing one channel as you can tell by the picture. I installed some fets to test everything and so far it play clear and clean. Then both channels ended up dc voltage. Neither outputs appear to be shorted from left to right pins. All check out good. Any leads to what to check greatly appreciated! Thanks
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I would check for open source resistors.
I would check the gate resistors.
I would check the drivers.
I would check resistors especially the 20 ohm ones.
I would check transistors and diodes in the failed channel.
I would check the gate resistors.
I would check the drivers.
I would check resistors especially the 20 ohm ones.
I would check transistors and diodes in the failed channel.