I recently took my Colour Classic out of ten years of storage, booted it up with a boot disk and loaded OS 7.5.3. I ordered a pram battery for it and thought I was good to go. Two days ago it refused to boot from the key board. I checked some old troubleshooting threads here and on a few other forums and followed the advice given, but still no go. As advised here and on another Mac forum, as a final simple fix to try, I let it sit for over 24 hours with power to it and the back switch on. Sure enough after about 24 hours I hit the soft power switch on the key board and it booted right up. Since then it has continued to boot with no problems.
I could not find an answer to why letting it sit fixed the problem. To me this is an indication of a future problem. Does this have something to do with the capacitors? This has got me wondering if I should replace the old capacitors with the more reliable solid state ones.
Update: Went to boot the CC a few minutes ago ( booted fine an hour before) and now it is dead again, not booting from the keyboard soft switch? I really want to get this up and operating...any ideas or help will be deeply appreciated.
For info purposes this is what I have tried so far.
-Checked capacitors for any leakage...there was none
-Cleaned the MB and MB back connector.
-made sure any chips on the MB were seated.
-Cleaned the connectors and re-seated the memory and video ram sticks.
-Removed the IIe card that was installed in the PDS slot.
-Made sure that the keyboard and cable were good.
-Pulled the MB and turn on the back panel power switch...fan, HD etc all started up. Did this a second time and re-seated the MB...front green light came on sound like it was booting, but no video.
-Finally, let it sit for 24 hours with the results above in beginning of post.
I haven't received the new pram battery yet, but from what I have read not having a pram install will not prevent a CC from booting.