Compaq Portable III PSU trouble

Nov 4, 2021
126
98
28
Tucson, AZ
I replaced most of the caps in the in the PSU but it was still making an odd high-pitched noise before resetting. Ruh-roh, maybe there's a problem with one of ICs died. A little looking around I spotted a thin line in one of the vertical boards.

Thar's your problem:
PXL_20230602_072114121.jpg


I'm thinking the odds of finding a replacement of these is pretty slim so I' guess I'll be trying an ATX4VC and figuring out what the display needs for power.