Samsung LE32R87BDX Power cycling

[Davy]

Hi,  have a Sammysung LE32R87BDX this is power cycling 'as of it wants' with kinda crackle.

The power supply voltages seems OK, I noticed if I disconnected the loudspeakers the TV would come on but with very distorted screen full of lines and the cycling not being as bad.

I suspect the main board as something in the 'screened can' possibly the CPU get pretty warm after a minute or two, would I be right or is there a cure?  Me thinks this was a Pound Shop telly.

Dave.