Has fuzzy spots all the way across the screen and just scrolls up

Try going into set up menu and look for a screen degauzing function or try setting the screen temp. to warmer or cooler.

Power supply is probably going out. Not likely the video card in this case.

You have a poor solder connection in the frame output stage. If you have a soldering iron, remove the back cover & look for an IC that will be attached to a metal plate that acts as a heatsink. Carefully re-solder the pin connections on this IC ensuring you dont leave any of the pins shorted together. If you spot any other connections around about this area also looking dry, then resolder them as well.

REPLACE VERICAL OUTPUT IC ' LA7838

Check the menu ,,it should have a option ,,called convergenge ,,that realigns the colors,, and some tvs have geomagnetic correction,, good luck

coloue spots on screen. how do you fix with screwdriver?

Hi.

This is repairable.
The problem will be with the inverter very common fault on all makes of Lcd Tv.

What part of UK are you in ?

http://dysonmanuals.llc.nu/

Definately a video processing problem and it may need a logic board it is called. Does the set work fine if you feed component into set to bypass all that? Let me know. GURU JAY

It soulds as of your solder joints are getting old and starting to crack. If the screen goes completely black then I would resolder all the major solder joints on the main PC board, and if you mean that the screen goes to all snow (as if the cable went out) then I would also pull the tuner and resolder the joints inside it too. If you do not have experience soldering on small PC boards then allow a qualified tech to handle it for you. The fact that it works sometimes means that all major components are fine and the repair shouldnt cost too much.