Try shopjimmy.com and then samsung.com for a service manual or the part. What usually you find is the same cable would be used in the UK model as another model so the problem is "Does Samsung sell parts in the UK?" For that you go to Samsung.com and ask directly.
I've known folk buy entire dead TVs for one small part.
Does anyone know what type of cable it is that runs between the power supply and the motherboard? Mine has the brown discolouration and corrosion that is causing the TV to crash and reset and I'd like to replace It. I'm having a hard time finding any info about it online.
Either a part number or just somewhere to order it (uk ideally) would be perfect.
Cheers for any help!