My Robotron cabaret has developed an issue!!! When the Hi-score table comes up after turning it on it displays garbage. It then cuts to attract mode where the writing is also garbage. When it gets to the title screen it is displayed in fragments and then resets to the carpet pattern. I'm getting 4.7V at the ram. The rom board displays a zero as it should. I have upgraded the ram and battery some time ago. It has the original power supply. Has anybody come across this? Any suggestions? Help!!!
