5 Jul
2025
5 Jul
'25
11:15 a.m.
On 7/4/25 16:29, Wayne S via cctalk wrote:
Had another odd one with our 780. FE came in replaced
board tge remote diagnostics called out and everything was good again. When he looked at
the bad board he started laughing.
One of the IC’s had a hole in it. Looked like it burned out.
He said it was the first time he’s ever seen that!
We had a group at the university that had a PDP-11 with a
fancy graphics frame buffer, they were doing planetary
imaging for NASA. One day the frame buffer went down, and
one of the boards had a big HOLE in it. I gather that a
Tantalum capacitor had shorted across the main 5 V power rails.
Jon