Hi Bib,
Thank you for visiting Sony Community!
Sorry to hear this but this is already hardware issue. We highly recommend contacting Sony Authorized Service Center for further assistance with this.
For further assistance regarding your concern, please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
Regards,
Vincent
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