If it's the PSU I doubt the symptom so try the PCB strip then motherboard. Replace the cheapest one first.
a permanent thick horizontal white bar from bottom of screen till almost, but not quite the centre of the screen.
, on any input.
The manual says check "module" , but which module?
It has a mother board, a psu board and a pcb strip at the back of the lcd panel.
any help aporeciated

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