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Amp Repair - Stuck to negative Rail
Hello! I have to repair an old Cabotron amplifier. The amp is a common class A-B, with MJ15015 e MJ15016 power transistors. I have the output stuck to negative rail: checked all the transistor searching for an "opened" one, every transistor is ok (also in the driver part). What may cause this kind of fault? Fuses are not blown. Thanks a lot for the answers! Ivan. |
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