Amp is a 2ch, channel 1 has very low output almost none. Ch 2 works just fine, works just fine when when its bridged. But seems like channel 1 is getting the sound from ch 2, because sound only comes out if rca is plugged in side 2. Not 1. I dont get anything at all out of either channel when I plug in ch 1 rca. Kinda confusing I know, but that's what's going on and cant figure out what may be up. Any input?
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What's the DC voltage on leg 3?
Either leg 2 or leg 3 is connected to ground. For the one that is NOT connected to ground, do you have audio on both transistors?
What's the DC voltage on the power supply pins of the op-amps in the preamp section? Place the black probe on the RCA shield.
Either leg 2 or leg 3 is connected to ground. For the one that is NOT connected to ground, do you have audio on both transistors?
What's the DC voltage on the power supply pins of the op-amps in the preamp section? Place the black probe on the RCA shield.
The amp has an isolated secondary. There is no connection between the primary and secondary grounds. That's why you need to measure the audio voltages with the black on the shields.
What's the resistance between the RCA shield and one of the non-bridging speaker wires?
You may be missing the negative regulated voltage or the zener used for regulation may be leaky. I'm not entirely sure how this amp is laid out. I'm guessing it's an early ZED.
What's the resistance between the RCA shield and one of the non-bridging speaker wires?
You may be missing the negative regulated voltage or the zener used for regulation may be leaky. I'm not entirely sure how this amp is laid out. I'm guessing it's an early ZED.
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