When we turn on the TV the picture is very fuzzy, colour still seems ok. It gradually "warms up" and the fuzziness reduces over a few minutes until the picture is pretty much back to normal. (TV Model is 57VW9UA Rear Pro 1080i HD TV)

Very common problem. not a common or easy fix though. This is known as a faulty "hypermodule" The hypemodule is a cuircit board that processes the signal. At the shop i have repaired a few a these on average 2 a month. The ideal situation is to replace this cuicit board. However this was such a common occurance these boards became rare. very hard to locate. So toshiba gave service centers another option a way to repair these. It however evolves the replacement of 11 very small micro capacitors. Only the most experence tech's experenced in surface mounted soldering should attempt this repair. You can easly mess this board up and once messed up...like i said you cant find them. My best advice is to find you a qualified shop who has done this repair before. It take an experence tech around 3 to 4 hours with magnifing glass and twezzers. My shop generally charges about 300 for this repair but shops vary based on experence