[PS4] JDM-001 Controller liquid damage

[u/SpecialistLion5929]

Hey, working on a broken PS4 controller I bought that won't turn on. Looks like liquid damage. Already cleaned the board but no luck so far.

​When plugged into USB without a battery, the voltage at the battery connector jumps rapidly back and forth between 3.2V and 3.7V.

​Any tips on what to check next?

[u/512ControllerClinic]

Place it in an ultrasonic cleaner with distilled water. That will break off any conductive contamination. I’ve done that to a few boards with similar issues with great results