ipod 4 Gen screen dark but iPod still works

hi, have problem ipod touch. still works, charges , connects itunes fine. tried far:

- reset home button , on/off button ( when did see screen quick second , apple logo, looked )
- opened ipod see if there lose connections ( connections )

when unplug ipod charger or plug in screen again shows split second black. points connection problem or loose ?

feedback appreciated, thanks.

cheers carsten

 

you might want post in ipod touch forum.

 

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