Fault:- Sonyericsson K550i kypad not working or some kys not working problem.
Solution: Change keypad panel if problem not solved then observe diagram below and trace damage line with multimeter and apply jumper with jumper wire.
  • K550i Keypad Jumpers
  • K550c Keypad Ways Problem
  • K550m Keypad Ways Problem
  • K550 Keypad Not Working

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