My mp3 player just went into the washer and dryer and when i charge it the screen works, but when I take the charger out, the screen doesn't work and the music doesn't play.My model is a Sony walkman
liquid damaged now. you won't be able to get this fixed, inside the circuit board some components will have rusted or the pcb will be damaged due to the wash dry cycle.
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Try fixfault.com to fix mp3 players.