G board

I have a sony rear projection tv model KP-EF48 MN2. It seems that the G board needs to change some capacitors in it as im getting vibrations in the picture bcos i messed up the tv by connecting an Earth wire to the chassis of the tv thinking that it would filter out unwanted nuances in the power supply. Pls tell me if the G board is available for me to buy. The part number is A-1316-394-A

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