The screen goes fuzzy (like interference) then it goes a light tint of blue, sometimes it reverts back to normal after a few mins but most of the time it stays blue for ages the sometimes goes red. I have been told to take the back off and hoover it out (so to speak) but this does not seem to resolve the problem. It is out of warranty and to get

I have looked on the forums but have not seen anything similar to what i am experiencing, has anyone else had this type of problem??? As i said i need this sorting asap.
Oh and I am using OS X 10.4.10 and calibrating the screen does not solve the problem, it just alters the tone of the tint
ANY HELP WOULD BE GREAT...
Cheers.