How to Fix PS4 Controller Analog Drift (R3 or L3 not working) - iFixit Repair Guide
How to fix the L3 button on my PS4 - Quora
How to Fix PS3 Controller ( L3 Button Problem) | N4G
3 Ways to Fix a PS3 Controller - wikiHow
Debacle: I've bought several used PS3 controllers and they all are useless because they operate all on their own, performing directions and pressing buttons, nonstop, as if a ghost is doing it.
I have one issue with the PS3 controller : r/gaming
What is L3 on a PlayStation controller? - Quora
Ken Umemoto's vReality: PlayStation Dualshock 3 L3 Button Fix
SOLVED: I can fix my PS3 controller without opening it? Random Pressing Button - DualShock 3 | Dualshock, Ps3 controller, Ps3