I recently got 2 Macintosh SE (lets call them A and B). A is a Macintosh SE 1/20 from 1987 and B is a SE FDHD. Macintosh B had a broken CRT where air got inside. So I replaced the CRT today but there is some flickering going on (moving thin horizontal lines.)
Even worse when I placed both SE side by side and turned both on I could see some huge horizontal lines on Macintosh A (perfect condition, works like a charm). I don't know if I just imagine it but I think I got a tingling sensation in my hands when I placed them near the case. When I ran the logic test on Snooper 2.0 the screen glitches although I tested the logic board in A before and all tests passed.
Other than the flickering the picture looks very good.
How do I troubleshoot this?
Even worse when I placed both SE side by side and turned both on I could see some huge horizontal lines on Macintosh A (perfect condition, works like a charm). I don't know if I just imagine it but I think I got a tingling sensation in my hands when I placed them near the case. When I ran the logic test on Snooper 2.0 the screen glitches although I tested the logic board in A before and all tests passed.
Other than the flickering the picture looks very good.
How do I troubleshoot this?