SSL EV 4000.1

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Did you check the master/slave switch on the other end of the amp?

Are any of the pins in the remote level jack shorted together?

For the connections to the driver board...
That doesn't sound quite right. The 1000pf cap isn't likely in series with the signal and it appears that the cap connects to pin 6.

If R195 is connected to pin 1 of the driver board on one end and pin 7 of U5, lift the end that connect to pin 7 of U5 and connect that end of the resistor to one of the op-amps that have audio.
 
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