One of my shop customers came by yesterday, and gave me a Blues Jr. He said it was working fine, and the next set, "the bottom fell out". He had dug it out of a store room, and decided I was the one that needed it. After hearing all the problems with these little amps, I was expecting the worst, and anticipating building something cool in the chassis. I plugged it into an extension cab, installed a reverb tank, and fired it up. All was well, it has had an adjustable bias pot installed, and after 30 minutes, I plugged a Tele in and played with it for a while, (maybe the K130 helped, but it sounds great!) I decided to get the SG with humbuckers, and try it, unplugging the cord produced hum, buzz, pop, static. Moving the plug, I realized it has a bad jack! I put one in the cart at CE today. I had planned on a project, but I think I'll just clean it up, install a jack and a speaker, and flip it. Maybe next time!