SMD Repair: Eleven Rack Guitar Effects
The Back/Edit button traces to the HCT245 IC I’ve removed with the hot-air tool. It was wet underneath with something! I’ve got it all cleaned up to remount.
Well… that wasn’t the problem BUT the thing worked if i pinched the IC with my fingers! Think think think… are my fingers being a pullup? Trace back to the button, find a pullup resistor… a 1K and it’s OPEN! Bam!