Superboard II - Rev B repair
Posted: Mon Aug 24, 2009 10:25 pm
While repairing my new C4P I thought I'd pull out my Superboard, which also was not working. I thought I'd make a new post to keep things separate.
Anyway, I'm not sure how I overlooked this before but the machine is missing the two 2T28 chips beside the CPU (UC6 and 7 if memory is correct). I understand these chips are impossible to find now. I can borrow some temporarily from one of the other machines to see if the board will run, but eventually they will need replacing..or not. I understand by reading the web, some Williams arcade machines use this chip as well and apparently they can be removed and pins jumpered. Apparently the 8T28 chips are simple buffer/amplifiers. So, does anyone know if this will work on the Superboard? Or, anyone have some spare chips?
Steve
Anyway, I'm not sure how I overlooked this before but the machine is missing the two 2T28 chips beside the CPU (UC6 and 7 if memory is correct). I understand these chips are impossible to find now. I can borrow some temporarily from one of the other machines to see if the board will run, but eventually they will need replacing..or not. I understand by reading the web, some Williams arcade machines use this chip as well and apparently they can be removed and pins jumpered. Apparently the 8T28 chips are simple buffer/amplifiers. So, does anyone know if this will work on the Superboard? Or, anyone have some spare chips?
Steve