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Italy

Hi! A friend gave me an old C64 breadbox model, which appears to be completely dead. So I was thinking about putting the mobo of my C64C (the grey, boring one) into the case of the old one. Anybody tried that? Should I try it, or will I risk breaking everything? The connectors seem to be the same, I didn't check the screws that fix the mobo to the case though...

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brighton, uk

Can't remember which is true or not, havent had a breadbox for about 3 years now. Isnt the breadbox board alot bigger?
Saying that I have a C64C with a weird revision- it has a 6581 in it and a larger board.
The screws should be the same, the connecters are the same.
Just wham it in and see what happens- what are you gonna lose!

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Italy

yeah, the only thing I risk is to break the mobo while doing this...
the case of the breabox C64 is heigher but shorter, I guess the mobo goes under the keyboard a bit, while in the c64c the mobo and the keyboard don't overlap

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England

No problem with this, I've done it lots of times.

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Italy

btw. this kind of silver coloured paperboard shield thing... what is it for exacly? Can I just discard it?

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Norwich, UK
rumpelfilter wrote:

btw. this kind of silver coloured paperboard shield thing... what is it for exacly? Can I just discard it?

if i remember correctly, they put the metallic metal shields in the sega megadrives to stop interference with something but apparently it was useless and not needed... so i assume its the same for the commodore 64 although i might be wrong

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Italy

all right I did the switch! Was really easy, and everything works, so I know I didn't break anything. I kept the cardboard shield thing... since I couldn't find any information regarding it. Now I only have one last doubt. the breadbox case seems to have less venting holes than the never C64C case, you think this is a problem? The SID is known for producing quite some heat...

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Sweden

If you're worried, put a heat sink on it.

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Italy

thinking about that, actually I'm thinking about adding heatsinks to all the ICs in the C64. The only problem I see is fixing them... somebody suggested Epoxy glue between the heatsink and the IC, has anybody tried that? I'm also considering to remove the silver shielding cardboard, since I read that it does not really work as it was intended to...

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▐▐▌▌▐▌▌█▐ ▐▐▌▌▐▌▌█▐ ▐▐▌▌▐▌▌█▐
rumpelfilter wrote:

thinking about that, actually I'm thinking about adding heatsinks to all the ICs in the C64. The only problem I see is fixing them... somebody suggested Epoxy glue between the heatsink and the IC, has anybody tried that? I'm also considering to remove the silver shielding cardboard, since I read that it does not really work as it was intended to...

i say trash the metallic cardboard.
sounds like it will only trap heat in the case...

as for attaching heatsinks...
all yew need is some: thermal adhesive
arctic silver makes an awesome one (linked above), but they (and others)
make a few different kinds. i have used the arctic silver brand on
computers and other retro-tech alike. simple and works really well.
but just like regular thermal compound, dont use too much!

Last edited by xero (Sep 1, 2010 8:51 pm)

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Italy

Didn't know that that existed! THanks a lot man, I'll see if I can find some!

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Norwich, UK

i might give this try soon too... i'll take pics once done but i've got another c64 to concentrate on atm

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England

Adding heatsinks to C=64 chips is well worthwhile, especially if you have a board with a 6581 SID chip in, as these run hotter (12V as opposed to 9V of the later revisions).

Last time I had to do one, I found that my Arctic Silver adhesive had all dried up. Instead I used regular thermal compound under the heatsinks, except for the four corners where I used small blobs of superglue to keep the sinks fixed. Works very nicely indeed.

And those foil cardboard things - just get rid!