samsung ps42b450b1wxxu picture fault ?

[paulb1970]

Evening All 

I have a samsung ps42b450b1wxxu which im trying to fix for my brother ...

When i switch it on i get sound and picture - But picture start's off very slow to come up ( bit's at a time )
spreading over the screen ...

After picture has filled whole screen it is totally unwatchable - though you can see the program a little bit as if it's a very poor signal ...

But aerial is ok ...

Has anyone had this problem - and what was at fault ?

Is it a case of a Board on it's way out ? - and any idea which Board ?

Tried searching on here but did'nt come up with anything ...

Any advice much appreciated ...

Cheer's
Paul