Hey there, I just picked up a Peavey Bandit (teal stripe) from the 90's so I could nostalgically pound away on some 80's metal riffs for old times sake. It's a fully functioning amp except for the fact that it needs to have the effects loop patched to run. Take the patch cord out and no sound. I'm sure someone has experienced this before, does anyone have any suggestions for where to start trying to diagnose the problem? I'm not super techy but I can operate a screw driver and a soldering iron like a pro. Thanks for any input.