Was curious if anyone here had any Mappy repair experience. I bought a tested, working Mappy but it gives me ram 7 errors after bootup. It shows the little mice on the screen before. According to the manual, it's the chip located at 2D.
I went ahead and took out and cleaned the legs of all chips on the CPU and video pcb's. The chips looked really good and no bent legs and minimal black stuff on a couple. To no avail, I still get the ram 7 error so I can only assume the chip is toast. I'm going to see if Bob Roberts has any, but wanted to check with you guys for any opinions. The board is connected to my galaga setup (no cab) if that might make a difference. Which it shouldn't I don't think.
I went ahead and took out and cleaned the legs of all chips on the CPU and video pcb's. The chips looked really good and no bent legs and minimal black stuff on a couple. To no avail, I still get the ram 7 error so I can only assume the chip is toast. I'm going to see if Bob Roberts has any, but wanted to check with you guys for any opinions. The board is connected to my galaga setup (no cab) if that might make a difference. Which it shouldn't I don't think.


