OK, you've proven that the signal dies somewhere between TP5 and TP7.
Test the voltage at TP5 and then follow it through R44, still there? How about through R29 and R22? How about at the top of the pots P6 and P12?
Trace the signal through the circuit until you find the spot where it stops.
Test the voltage at TP5 and then follow it through R44, still there? How about through R29 and R22? How about at the top of the pots P6 and P12?
Trace the signal through the circuit until you find the spot where it stops.
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