Electronic ORGAN repair question

[RCBOB]

I'm looking for a simple AUDIO TRACER circuit or other means to hear were the audio is missing on this CONN organ. All I have is a multimeter and an old Knight VTVM. Any help will be appreciated.
Bob K9JNB

 

[duke37]

Do you have an audio system with provision for external input?
Failing this, use a portable radio with the input across the volume control.

 

[RCBOB]

Portable radio I have. What PROBE/cap.to use for tracing the circuit.

 

[duke37]

It depends on whether the organ is transistorised or valved.
A 100k resistor in series with a 100nF capacitor should protect the radio in most cases and pass sufficient signal.