View Full Version : Help with c64!!!

January 20th, 2009, 02:40 AM
Well took out the c64 about a year ago and it worked fine for like 20 minutes. Then, randomly, the screen's colors would go black and white and not switch back. I took it out again today to make sure it worked and it was still in black and white. I decided to play some jumpman but when i turned it on again I can't get video! Help!

Bungo Pony
January 20th, 2009, 03:30 AM
I had repeated problems with the C-64's power supply. I seem to recall having color problems as you're describing. After I had two of them die on me, I started stocking up on any power supplies I came across.

January 20th, 2009, 03:31 AM
With black'n white, do you mean shades of grey, or pure black and white?

there might be some weak soldering joints after my guess, but I really don't know much about C64's. Somebody else here could problably give a way more detailed help than I.

January 20th, 2009, 05:57 AM
I am using a different power supply than i was given cause if i remember my old one died. The black and white that i was getting was Greyscale because in games i could tell the shades of grey.

January 20th, 2009, 09:33 AM
Is the signal going through the RF modulator or straight out composite video? If the RF mod, it wouldn't be that the tuning is a little off, would it? What happens if you wriggle the cable? Any change?


January 20th, 2009, 09:59 AM
I am not sure if this is the problem becuase it happened so long ago for me. My C64 was acting up so I did some research and found that the sound cards can sometimes go bad. I tried my C64 without the sound card and it worked just fine. Not sure if this is your problem, but its one more thing to try.

January 20th, 2009, 10:35 AM
Sound chip has nothing to do with color.

Culprits are: VIC-II chip, Crystal, IC driving the crystal (varies depending on make of board), RF modulator.

If the text color is all berserk then the PLA chip is the culprit.