Recent content by donbroc

after doing some digging online I think it may still be a ROM issue. Another thing that happened is when I left it on for a bit most of the chips were at an acceptable temperature, including the ROM chip, but the CPU was very hot. About the ROM chip, in case it is the problem, I just wanted to...

I don't know if it helps or not, but the checkerboard pattern wasn't entirely consistent. By that I mean its as if some pixels on the screen were the opposite colour. Here's a picture of it:

Yes, the ROM is the right orientation with the pins in the correct place. I do not know if the ROM chip itself is faulty though as I haven't got any other parts to test with and parts are quite hard to come by where I am.

Yeah, the 12 & 5 pins are fine. I did notice however that there is some green corrosion on the cable which gives power to the logic board so I will see if I can clean that up.

Some time ago I bought a Macintosh Classic. I checked online and people said to recap a non-functional logic/analogue board, so I cleaned and recapped the analogue and logic boards fully. "Okay" I thought, "maybe I should turn it on." So I did. what I got was what I'd describe as a flickering...