I have an old-ish Goodmans 42 inch plasma which appears to have bitten the dust. When powered on the screen is blue with an 8" white band on the RHS of the screen. This bansd swaps to the LHS of teh screen when I press teh "menu" button. Very strange? Is this a common fault or worth fixing, or do I bin the telly? The display also has a sticker on the back saying LGPDP42V6