Do you mean for removal of the power supply socket?There's a hex screw on the side that might need to be removed?
Also, you might need to press the pcb mounted power connector inwards. Gotta be careful with that though, as you can break it off with too much pressure. Had to do this with some EHX pedals, and what worked best for me is to put a piece of wood (or whatever) that's only slightly larger than the gap, place it inside and turn it until it snaps straight... 1 or 2 mm will do the trick.
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Yeah, you need to push the connector inwards, out of the square gap of the enclosure. It's part of what keeps the pcb in place. That, and the removal of the nut on the footswitch, should get you started with getting the pcb loose. Go from there! Don't use any force on the pcb. Think of it as a puzzle; to use force is to cheat!Do you mean for removal of the power supply socket?
Not to mention cheating will break a trace or solder joint or worse... Then you'll have a nice paperweight for your home-office....Think of it as a puzzle; to use force is to cheat!