09-09-2021, 10:37 AM
Standard faultfinding procedures apply.
First check the power rails. Many of us have been caught that way, even though we should know better. This amp has +ve and -ve power rails. Difficult to tell what they should be, but I'd guess around +/-15V from what I can see.
Then you can either connect and input an trace the signal forwards with a scope. Or inject a signal near the output and work backwards. At least you aren't dealing with a fully DC coupled design where a single fault anywhere can muck up the entire circuit.
First check the power rails. Many of us have been caught that way, even though we should know better. This amp has +ve and -ve power rails. Difficult to tell what they should be, but I'd guess around +/-15V from what I can see.
Then you can either connect and input an trace the signal forwards with a scope. Or inject a signal near the output and work backwards. At least you aren't dealing with a fully DC coupled design where a single fault anywhere can muck up the entire circuit.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
