Hi all
I am working on a Commodore 64 breadboard with system board
250407. The computer turns on and sends some kind of signal to my monitor but
it is a black screen. The monitor acknowledges a signal whenever you power on
and off the system. I checked all chips and they are working fine on another
system that has no issues. I even re-socketed the ram chips and all are
working.
I read on the net that it could be the MOS 7707 chip. I already re-socketed
that chip but I do not have another to test on the system.
Does anyone have spare chips?
I have another system with MOS 8701 chip not working
Thanks
Simon