I recently purchased a Colour Classic, and it is behaving a bit odd. It will only startup if I remove the l/b, turn on the machine, and shove the l/b back in. After that, everything works just fine.
Initially it wouldn't start at all, so I took it apart and checked the a/b. Everything looked fine, and the voltages were reading correctly. I knew the power cord was good, but I tried another one anyways, and turned on the machine. It booted up normally. The hard drive was spinning, but the screen was blank. I then realized that I hadn't put the l/b back in. So I shoved it back in. Lo and behold, I heard the system "bong", and the screen had the "? disk" icon. I have an original copy of System 7.5.3 on floppies, so I went ahead and installed it. Now it works great. I just have to do my little "trick" everytime I want to use it.
I am certain that it isn't the a/b, since it works just fine. I don't think it's the PRAM battery, otherwise it would start even after I shove the l/b back in. I'm thinking the contacts on the l/b might be bad, but they look fine to me. Perhaps it could be the contacts on the inside.
I was wondering if anyone has any suggestions or has experienced anything like this before. I would appreciate any help you all could offer.