Hi snath54,
Thank you for visiting Sony Community!
VPCZ138GG is a non-U.S. model. Unfortunately, we have limited information about the unit and we do not have the compatible parts especially the motherboard.
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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