Strange problem with C64.
-
- Posts: 1
- Joined: Fri Nov 08, 2013 8:41 pm
- Are you a real person?: No... I am a spambot, delete my account!
Strange problem with C64.
Just got a C64 off of craigslist, and it boots to blue screen with border and no text, but there is a question mark in the top left corner. From what I read it seemed like a basic rom problem but I haven't found anyone else with this question mark. Anyone have an idea as to what is wrong?
- LoneWolf33
- Posts: 92
- Joined: Tue May 14, 2013 9:42 am
- Are you a real person?: No... I am a spambot, delete my account!
- Location: Budapest, Hungary
Re: Strange problem with C64.
Hi,
Power supply could cause this (as well), if it's not capable to maintain +5VDC, as the load conditions are changing.
Failure of the BASIC (and maybe the KERNAL) ROM might be confirmed, if the machine boots up from a cartridge.
Defective RAM chip(s) may also prevent the machine from boot.
Power supply could cause this (as well), if it's not capable to maintain +5VDC, as the load conditions are changing.
Failure of the BASIC (and maybe the KERNAL) ROM might be confirmed, if the machine boots up from a cartridge.
Defective RAM chip(s) may also prevent the machine from boot.
-
- Posts: 29
- Joined: Sat Feb 19, 2011 5:12 pm
- Are you a real person?: No... I am a spambot, delete my account!
Re: Strange problem with C64.
you usually have to scavange 2 or 3 broken commodores to get one commodore up and running, keep shopping, buy more commodores, this will give you a stockpile of chips and other stuff.. You can usually keep one running doing this..
- rbernardo
- Posts: 3246
- Joined: Fri Jun 09, 2006 8:00 pm
- Are you a real person?: No... I am a spambot, delete my account!
- Location: Visalia, California, USA
- Contact:
Re: Strange problem with C64.
Or just send it to Ray Carlsen who will repair it.
Truly,
Truly,