Samsung le32r87bd strange screen fault

[scooby-doo]

HI

I have a strange fault with this TV, I will try and explain as best I can.....When you have the TV on EXT1 with no input you get the blue screen...everything looks fine...you change the source to DTV the screen looks like a screen saver is just starting and fades very pixely to black then pops up the "No Signal" message and it looks very dim/faded...then if you press the menu button the menu comes up looking fine doesnt seem dim at all

Anyone give us any pointers into where to start looking on this one please

With thanks

[scooby-doo]

Cured it.....well say cured it just went into the service menu of the TV and when the menu popped up it had cleared itself..I didnt touch anything within the service menu so god only knows what was up with that.