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
