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SONY NV U53 How do you open it up?

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Repair of my Sony NV-U53G Sat Nav?

cracked screen on sat nav?

My Sony NV U53 lcd screen works but touch sensetive no longer works. ?

touch screen on sony nvu53 has stopped responding?

sony nv-u52g?

how do i update sony navu?

How do i update Sony Sat Nav NV-U52G maps?