[title] Spray contact cleaner in the faulty switch
[* black] With the board partially removed, you have enough access to fix the problem. Get a can of contact cleaner, and spray it in the potentiometer that is causing problems. DeoxIT is recommended, but equivalent products should also work. Once you have sprayed the potentiometer, turn it several times.
[* icon_note] You do not need a lot of contact cleaner to fix this issue, most likely. Only use one or two sprays, as this is usually sufficient. If you have to do it a second time, the potentiometer may be faulty beyond repair. A new board is needed for these units.
[title] Spray contact cleaner in the faulty
[* ] a of contact cleaner the . , .
[* ] contact cleaner , most . you have the potentiometer.