Vox AC30 CC2

[Carlosraj]

Hi


The reverb of this amp is not working. I have checked the reverb tank with another amp and the reverb tank is working fine. When I connect it back to this amp, it does not work. If I knock the tank, I can hear the reverb, which means that the output is OK. I guess the problem is with the input and what can be the fault. How can I check that the input is OK or not. Attached the schematic.


Thanks


Sorry, I cannot upload the complete schematic, as the file is 1.9 MB.

 

[JonSnell Electronic]

Check you have signal on the phono lead feeding the input to the tank. If none there follow the signal bath backwards towards the main signal.

 

[Carlosraj]

There was no signal at the input RCA. Upon tracing back, there was signal present at the gate of Q101, but no signal at the drain, and also no voltage at the drain. R116 (100K) which brings in the voltage was open. Replaced it and now the reverb works fine.


Thanks alot JonSnell.