pcmhacking.net

Hey

Just after some thoughts.
My C64C i got some time ago (as DOA) is well still DOA

Powered it up with known good PSU. grey screen. nothing much else. RAM chips hot as hell. shut off. desoldered them (known issue as they fail)

Started buzzing out the traces to make sure everything is ok. +5VDC and GND have continuity. WTF?

Most of the chips on the c64c are soldered on board (minus 2) - i've removed them and still same, short somewhere.

Don't know if another chip has shorted, or, whats going on .... could always plug back it now the RAM chips are gone and see what gets hot next, but, nah, not really.

Oh my your game I left the C64 back in the 80's were they belong, hell most of the games you can play on a pc via an emulator (even thats painful )
easier just to find a few donners and try and make a decent working one...they pop up on ebay for a few $$$ now and again
http://www.ebay.com.au/itm/Commodore-64 ... SwN6JY~sA7

like VSH and his retro AMD rig.
i have 12 amigas and a 64.
well its a challenge. the ram chips are toast, so they're off the board. continuity between +5VDC is not 0 ohms, north (ie: PSU end) to GND is 10 ohms, directly downward of the +5VDC in is, you guessed it, a 10 ohm resistor.
have sent it to a guy with a tone ohm to check for dead shorts but i don't think he will find any
i got a couple of 18 pin sockets yesterday so i can seat the new memory in the board when it comes back
dead ram chips are common on the C64C so hopefully its a nice fix.