I recently inherited an M5126 Macintosh Portable with the modem and ram expansion card, hard disk and floppy drive. I tore down the device before powering on and of course had to clean up the capacitor electrolyte and replace them. During the recap some pads became fragile so I made a few bodges that came out successfully. After I did a board wash, let it dry and upon powering on with a new battery and working recapped power supply all I got was a speaker crackle. The voltage regulator is working and spitting out 5.05-5.26 volts when I have everything connected to benchtop power supply. I also tried reset methods with the reset and interrupt buttons and I was able to get a short lived chime once, but haven’t since. Any ideas or help?
