It got wet: it won't turn on, the screen glitches, or it won't charge.
Corrosion on the board, which keeps spreading while the battery is connected.
Don't charge it. We disassemble it, clean the board ultrasonically and test part by part.
It depends on the model and on what we find inside, so we quote each repair individually. The diagnosis fee depends on the device, and you approve the exact repair price before any repair starts. If it can't be fixed, you only pay the diagnosis.