Answer to: Water damaged, PS4 controller, how to diagnose and repair?Ok so I had some spare pure alcohol left over from an iPhone repair. You can get it on eBay. I put the hole 100mill bottle in to the ring around the joy sticks and kept shaking it for about 15mins (aggressive shaking) then I put my girlfriends hair dryer on full power like Jeremy clarkson. Full power (cold) don't be tempted by hot it warps the battery casing. And it came back to life I hope it helps you guys/girls.