no power leds, was working 1 year ago

so I don't generally use this as it's really more of a toy/ testing tool for vintage vehicle ecms and such and I quite like using it to flash gm prom units

well imagine my surprise when I pulled it out of storage and plugged it into its 100 watt replacement brick (had worked before and works on a more modern toshiba) and nothing. no lights no small clicks just completely dead. the power is making it in but maybe it's battery is just finally that dead and it needs to sit on charge for a few days

if anyone has any ideas that would be great but I will list the things I've done so far

1. complete disassembly to check for power making it past the ac jack
2. checking for bad components on the board with a multimeter after discharging the caps by holding the power button (none found)
3. attempted to bypass power jack at the traces leading to the converter circuit and nothing.

I do know I haven't done any damage as of yet since it's not my first time experiencing a power issue on this specific laptop and have done this before and one day it kinda just worked so idk