I'm sure they will have more things to add. There are a lot of really sharp minds in this forum. If you can get at the switch contacts up by the controls, gently pry them apart and insert some 400 or so grit sandpaper folded in half between them, let go of them and gently pull the sandpaper through to clean them. As long as it is working OK, why not just see what happens? You can always replace them later.
There is a pretty good chance the filter caps will be needing to be replaced, although I have restored four Hammond amps, two Bogens and a few other PA amps all made in the late '50s and early '60s and turned them into guitar amps and have not needed to replace any filter cap. It depends how much you want to dig into the amp chassis and how much you know but you could check for proper voltages for the B+ supply and other key voltages. You might want to replace it as it could blow more easily from being old. If there are vent holes that are plugged up, clean them out for better air flow.Ĭheck the fuse to see if it is the proper size and type.
Get rid of as much dust as you can as this will allow the tubes to cool better. Scrape away any crud by the nut first to get a good connection. The one thing for sure is to provide a three wire power plug with the green ground wire secured firmly to the chassis usually by installing a crimp-on ring connector and securing it under a nut that holds the power transformer or something else close to where the power cord comes in. I have looked over this sobering thread. if it isn't broken.?Ĭan an aged, failing component take out the entire system? Or will the fuses handle any failure?
Is dismantling it.following service manual instructions.and cleaning off the lint, contacts etc, sufficient for safe operation of electronics this age? I've located Morelock's in Mississippi who have the service manual and all parts.so far the only advice they gave me is. I'm embarking on a search and research mission and I'm starting at diyaudio instruments forum for sound advice. I think it would be a fun project to put the organ in order and I'm looking forward to doing the research and the work.īut I have not ruled out turning it over to an experience repair shop, either. I'm electronics hobbiest with an equipped bench but I know nothing about vacuum tubes and never work with mains power other than the occasional power supply projects. It's staying off power until we can decide how safe it is and what's involved with getting it safe, happy and healthy. We took the back off and it's dusty/linty inside and I don't think it's been maintained in years.dozens of tubes. He's plugged it in and says all keys, buttons, pedals, switches etc work and it sounds great. My musician son recently acquired a Wuriltzer 4100BW organ (1959-1963) in very good working condition. Concerns about a 54 yr old Wurlitzer vacuum tube organ & safety of old electronics