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- Path: sparky!uunet!stanford.edu!rutgers!cbmvax!fred
- From: fred@cbmvax.commodore.com (Fred Bowen)
- Newsgroups: comp.sys.cbm
- Subject: Re: ***** HELP needed on a c-64 video problem *
- Message-ID: <38741@cbmvax.commodore.com>
- Date: 22 Jan 93 17:37:36 GMT
- References: <C15vBy.JKA@undergrad.math.waterloo.edu> <1jk63sINNb6i@hp-col.col.hp.com> <1993Jan21.043945.6748@ucsu.Colorado.EDU>
- Reply-To: fred@cbmvax.commodore.com (Fred Bowen)
- Organization: Commodore, West Chester, PA
- Lines: 39
-
- rlucas@bvsd.Co.EDU (Richard Lucas) writes:
- >>>> This summer, my sister-in-law fried (as in smoke coming out of the
- >>>> keyboard) our beloved C64. The component that blew is located at position
- >>>> C15 on the motherboard. Bottom part of it is blue; top part is completely
- >>>> missing, taking with it anything to indicate just what it was....
- >
- >Bruce Vreiling:
- >>> I'm no hardware expert, but I think a reasonable question you should be
- >>> asking is WHY did it blow? It could very well be that you pop in a new chip,
- >
- > It probably isn't a 'chip' in the correct sense of that word.
- >Component would be a better choice. What's left doesn't look like a
- >capacitor, or much of anything actually, which is the problem. There's no
- >similar item on the motherboard that we can see. Position C15 is just to
- >the left and a little bit below what someone told me in e-mail is the
- >6567R8 MOS chip (using the word correctly this time).
-
- There have been many different C64 boards- that's why it's difficult for
- folks to help identify such parts. From your description of the part
- and the things near it, sounds like 4.7uF 16V tantalum capacitor.
-
- But an exploding cap implies something serious happened, as Bruce and
- others suggested. While something might have shorted out on your board,
- it's more likely your power supply failed, sending bad news throughout
- your C64 and frying (the smoke) many components and chips before the
- lowly cap exploded (in fact, the system would likely work just fine
- without that particular cap).
-
- Before you simply replace the cap (costs about $.50) and plug 'er in
- again, check the power supply! Otherwise, wear protective gear and duck,
- least one of those exploding caps sting you.
- --
-
- --
- Fred Bowen uucp: {uunet|rutgers|pyramid}!cbmvax!fred
- domain: fred@cbmvax.commodore.com
- tele: 215 431-9100
-
- Commodore Electronics, Ltd., 1200 Wilson Drive, West Chester, PA, 19380
-