Lg 42ls575t-zd

[Madbootboy]

Hi I have an lg 42ls575t-zd problem us when I try to switch it on the power led just blinks 28 times then stops blinking, I've checked all voltages coming from the psu there fine, I managed to borrow a replacement main board and the TV works fine apart from the picture being upside down due to the replacement board having a different screen from mine, is there anyway to change the EPROM or something else from the old board to fix the inverted screen thanks
Scott.
Original board is a EAX64307906(1.0) EBT62136959 screen number lc420eue
Replacement board EAX64307906(1.0) EBT62225714 screen number T420HVN01.1