Search found 4 matches

by TangentDelta
Mon Feb 07, 2011 5:57 am
Forum: Commodore Discussion
Topic: Blank screen syndrome experienced by early C64
Replies: 1
Views: 5044

Blank screen syndrome experienced by early C64

I have been working on my faulty C64 and it appears that something on the board is shorting out. I went over all of the chips with an oscilloscope, and on startup, it resets the chips but then locks up when trying to read the ROM. The five volt regulator after a minute, gets incredibly hot. So hot ...
by TangentDelta
Thu Jan 20, 2011 5:12 am
Forum: Commodore Discussion
Topic: Help with commodore 64 problem
Replies: 5
Views: 14053

Re: Help with commodore 64 problem

Could somebody please help me? I'm still unable to solve the blank screen syndrome that my Commodore 64 has. I used an oscilloscope on the Vic chip, and all of the pins have the correct frequency. I personally think it's the character ROM, but I don't know where to find replacement chips at. If I ...
by TangentDelta
Wed Jan 05, 2011 4:43 am
Forum: Commodore Discussion
Topic: Help with commodore 64 problem
Replies: 5
Views: 14053

Re: Help with commodore 64 problem

After some research, I have discovered that my commodore 64 is experiencing blank screen syndrome. I put the game cartridge Centipede into it, and after moving the power adapter around, a garbled game screen came up. I switched the computer off, but after that, I couldn't get it to give me that ...
by TangentDelta
Tue Jan 04, 2011 5:07 pm
Forum: Commodore Discussion
Topic: Help with commodore 64 problem
Replies: 5
Views: 14053

Help with commodore 64 problem

Hello, I have joined this forum because I am having problems with my commodore 64 system. When I got it on ebay, it came with a huge bundle of joysticks, a cassette player, a 5 1/4 floppy drive, and various din cables. It powers up okay, but I have to tilt the power cable slightly down, because the ...