Panasonic TX-P50X10B AV Board replacement. HELP PLEASE.

[clark97]

I Have a panasonic plasma TX-P50X10B with a faulty main AV board. I've been sent a replacement but its from a TXP37X10B I've tried to change screen size in service mode but it comes up ng and reverts to 37. I noticed in the manual from an older set that these values are factory set.
The board has an integrated T-con but all connections are correct.

Will I get away with changing the eeprom or will there be more to change.

Thanks in advance.