I just purchased a 1999 JCM2000 DSL 50 in mint condition .  It worked for an hour great no issues.

Turned everything off and came back later to find the following:

Channel led lights do not light.

Pedals in the effects loop have no effect.  Just had a Fortin Zuul in the loop.

Cannot change the channel with footswitch nor the front panel channel button. 

I do get good signal out of the cab but am stuck on the lead channel.  

All the tone stack controls work fine.

I can change between lead 1 and lead 2. 

I have pulled the chassis and inspected fuses and all seem good. 

Nothing looks burnt on the boards nor did I find any loose connections.

I removed all connections so only the cab was connected and have same issue. 

Any suggestions before I take it? 

I thought the effects loop would have still worked being I get signal out of the cab. 

Very confused as I have never seen something like this before.