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Tableta Lenovo - se stinge ecranul in mod aleatoriu

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Va salut, 

Tableta este Lenovo model tb2-x30l. Ecranul are ceva crapaturi.

In mod aleatoriu, se stinge ecranul si reporneste dupa 1-5 secunde. Imagininea apare cu ecranul de stand-by. Ca si cum ar fi deschisa din buton.

Cat timp lipseste imaginea, sunetul functioneaza normal, de exemplu, daca urmaresc un clip pe youtube.

Cat timp lipseste imaginea, backlight-ul functioneaza (sesizat in intuneric).

Chiar lasata pe masa, tot dispare si reapare imaginea, aleatoriu. 

Ce ar putea fi?

Edited by norad
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