Analogue stick reporting false input at rest.
3 repair logs
Two very grotty PS4 controllers, one of them drifting. The drift was fixed with nothing more than a thorough cleaning of the potentiometer wiper, and the rusted rumble motors came up reasonably well after an Evaporust soak.
Six Switch Pro controllers with half of them drifting. All fixed by cleaning the potentiometers, not a single soldering iron needed.
Random button presses on the black controller turned out to just be dirt. Sometimes cleaning is the fix.