Nomad 100 - Great little amp but reverb has finally died!

[cmac]

So glad I found this forum - so hi all from a Nomad fan in the UK here!

Really hope someone can advise or help me please?

The reverb on my trusty 25 year old Nomad 100 has stopped working (in truth it was never that good) - so I've pulled out the tank and tested it with an ohmmeter and also the leads - all seems OK there. If the tank is not at fault what is the next most likely problem - would it be the 5532 driver IC I wonder?

Also I do have a circuit diagram but cant seem to find a PCB layout diagram for the Nomad 100 anywhere - obviously this would be a real help in troubleshooting!

I'd appreciate any help here please.

Best regards,

Clyde.

 

[luria]

Hi there, mine is also broken. Can´t figure out why.

Here's the schematics I have, hope they help.

 

[DrKev]

I'd first look at replacing the J175 transistor at the end of the reverb circuit. If that's faulty the circuit is permanently muted.

 

[cmac]

I know these amps are 'hand built' but does that really explain why it is so difficult to find a PCB layout diagram?