BAMF 2200.2

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Amp has no output. Rail voltage is present and regulated voltage for op- amps is also there.I get audio reaching the driver boards. Original problem was bad output drivers for one channel.I don't know if it has a mute circuit. Any ideas?
 

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I think you should have ±regulated voltage on the second pin from each end. From the photos I have of the 4ch version, it appears that those pins connect to the 8-pin op-amp behind the driver boards (IL4558, U502 in the amp I'm using as a reference). Pull that op-amp. Does that allow the two pins to get ±regulated voltage?

Be careful. Watch for any problems. I'm not sure how they're using that op-amp. It could be part of a protection circuit and removing it could prevent the amp from protecting itself.
 
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