LG193000za signal board replacement


Standard Member
I have a 19lg3000za lcd tv, the sound went one day out of the blue and i decided the signal board needed replacing, i found a suitable replacement on ebay (where else) and swapped it over, now the sound is perfect but it turns out the signal board was from a 22" tv and so the picture it displays overlaps the intended screen by a fair way, is there any way to get to a service menu or reprogram the eeprom to make this signal board put out the correct signal for a 19" screen?
also there is a rs232 port on the back of the tv if that is any help?

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