D-Pad wheel acts jittery and overly sensitive
My Sony DSC-HX60 (it wasn't in the list so I choose the most similar model) d-pad/jog wheel works overly sensitive and jittery.
Even when every so slightly touching the moveable ring on the jog wheel (the ring to scroll through the menu and adjusting options), the in-menu selection indicator jitters and jumps around. I cannot use the wheel and the center button precisely.
I have removed the back of the camera and cleaned the PCB and the jog wheel with a Q-tip. It had a lot of dust around the jog wheel.
After reassembling the back of the camera, it worked for a few operations but then became jittery again. Just resting my thumb very lightly on the jog wheel feels almost like touching a very sensitive touch screen.
What is the reason the buttons under d-pads/jog wheels/flat PCB buttons start to act weird?
What is the general best practice to fix it?
I have read about cleaning misbehaving d-pads with
a) isopropyl (why not ethanol?)
b) applying graphite on or under the soldered flat buttons. Guess this only works when the buttons are replaceable or if the buttons are rubber pressing on a PCB trace, that close a circuit then.