[notallbad]

OK, so after having replaced lamp 3 and 4 with energy savers it appears both 3 and 4 lamps are at fault, the backlights and energy savers come on and remain on. But with just 1 energy saver hooked up in place of either lamp 3 or 4 it goes back to half lit screen and 2 secs to black.

Thanks for this great info Budm, its now pinpointed my issue and given me an invaluable test tool for future use. Keep up the great work!