SE J200i turn off in 5s & on again

[Ludfi]

I tried to repair my friend's phone. SE J200i, when it turn off it will turn on automaticaly after 5 s. anybody can help me what problem with that phone? Thanks

[electrophoretic]

what did you do to "try" to repair it!? on Nokia if you replace a power switch incorrectly it will cause the phone to auto power on... need more details mate...

G

[Ludfi]

what did you do to "try" to repair it!? on Nokia if you replace a power switch incorrectly it will cause the phone to auto power on... need more details mate...

G

I try washed the machine and try to replace joystick. but still have that problem.
I think joystick is mulfunction, because when i press down joystick it show phonebook entry, when i press down it again for 5 times, suddenly run to end off phonebook entry.