Projects > Power amplifiers
QRP02 DC out
peranders:
Note pin 1 IC1 not IC2. When the output voltage goes away (when you touch it), does the amp work?
AudioSpirit:
pin1 ic1 has +10 volt on it
peranders:
Check very carefully all parts around the input buffer, IC1. Check supply voltage. Pin 3 should have DC-path down to ground and pin 2 should have connection via R5 and down to ground via R4.
Both pin 2 and 3 should be at zero volts, and so the output pin 1.
AudioSpirit:
I was able to bring up one of chanells.Sounds ok,now playing.Will compare with not working chanel,it may will help me.If not I will let oyu know.Thank you.
peranders:
What was the trouble?
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