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Original Message
RE: Troubleshooting suggestions for a subwoofer plate amp?
Posted by fredtr on July 22, 2020 at 13:35:15:
It doesn't sound like DC to speakers is the problem. Regarding bad output stage transistor, it is possible, but you will usually see DC or very weak, much distorted lower bass. Can you post some pictures? One thing that I will look for are power supply test points. I tried to find info on it, one thing mentioned, it varies B+.