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- Path: earth.superlink.net!usenet
- From: m (s)
- Newsgroups: comp.sys.cbm
- Subject: Re: Problems with C64
- Date: Fri, 08 Mar 1996 09:56:16 GMT
- Organization: SuperNet Inc. (908) 828-8988
- Message-ID: <313ff0be.4927452@news.superlink.net>
- References: <4hhkhe$b1s@morgan.vf.mmc.com>
- NNTP-Posting-Host: p111.superlink.net
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-
- On Tue, 05 Mar 96 09:40:35 PST, esfwhlt@odclav.orl.mmc.com wrote:
-
- >
- >I need some advice regarding my C64. When it is turned on, 1 of 2 things
-
- >happens:
- > 1)The screen is full of random characters in random colors
-
- > 2)The screen is blank
- >
- >Usually it is #2. I've been reading this group for the last couple weeks and
- >there seems to be a lot of problems with power supplies. Are these symptoms
- >for a bad power supply or something more serious?
- >
- >The computer has worked flawlessly since around 1983 until about 2 months ago.
- >I was glad to see that others are still using their Commodore products.
- >
- >I'd appreciate any help that the "experts" can give me!
- >
- Sounds like either you have a cold solder joint (boy is that common in
- electronics) or a bad chip! (Yes, rom chips go bad. So do video memory
- chips.) Look for someone selling a used C64 on the net, they're
- cheaper than trying to get obsolete rom chips. You can open the case
- and try retouching all the little solder joints yourself and see if
- thats the problem. Just heat them up enough to get the solder flowing
- and then re-flow them. No new solder should be necessary. I fix
- pinball machine Motherboards and that's very similar to those old 8
- bit machines. Also, the biggest enemy to any circuit board is heat, so
- make sure there is plenty of ventilation around the cpu and it's not
- on carpet or in an enclosed keyboard drawer.
- Hope this helps!
-
-
-