Counting from the op-amp end of the driver board, pin 6 should have nearly rail voltage during the mute delay and then drop to near ground when the mute delay ends.
Is this what you see?
How long does it take from the time that remote voltage is applied until the voltage on that pin drops to near ground?
about 3 secoonds it drops to between 10v and 12v then back up to rail voltage fluctuating from 66v to 90 v
An externally hosted image should be here but it was not working when we last tested it.
Did you reinstall the transistor that was in the Q43 location?
Does it produce audio?
Q43 installed Q44 removed no audio present
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