I moved to Costa Rica, the tv has double picture with green and pink colors on everything and the picture curves on the screen. I hired a repairman here who said there are no parts for the repair in Costa Rica. He says I need a new video card, but maybe he means video board, as things do not translate well to English. I can not look for a part online if i do not know what the part number is. Can anyone help me? Thank you very much
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Re: Mitsubishi vs-70803 Bad picture, please help
The parts you need to fix the TV are 2 integrated circuits with the following number STK392-040 and the locations of the parts is IC8D01 and IC8D02.
You can find the parts you need here or you can also contact this website and ask them for a convergence repair kit for your TV. They will provide you with the ICs and low value resistors just in case they are damaged.
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This is a convergence problem and not really a DIY Many amateurs try it to save money but end up spending more on it than a professional. There are dozens on here that managed to fix it for a day or two only to have it fail again.
Sounds like your green tube is low or is bad Mitsubishi > VS XXXX this model is famous for fluid leaks. each projector
tube has a reservoir on the front of it with a fluid in it. this keeps the face of the tube cool.
this depends on how bad the damage is in the tv. in most cases we can reseal the tube and clean up the fluid 400-600.
take the tube out you will see where it leaked. The problem is that the
frame on the CRT that the heavy screws with springs are mounted on (that
hold the lens coupled to the CRT) is weak and they can bend. We have seen
several that have leaked after the customer moved the set. You can only
tighten them down so much because the frame bends. It is just stamped metal
and not welded at the corners to support the bend.
We remove the CRT, clean it all up, add a very small amount of RTV sealer to
the gasket, reassemble, let the RTV cure thoroughly and refill with coolant.
The extra sealer should prevent future leaks. Haven't had a recall yet.
Mits says replace the CRT...too costly.
You msut check the yokes carefully as well. If any coolant gets into them
you can end up with shorts there and a mess.
Clean the boards carefully and repair any corrosion damage. The coolant is
ethylene glycol and glycerine which is water soluable.
I have seen this before, and I can only describe it as a flaking of the phosphorus coating in one of the picture tubes. If you can, remove the back such that you can take a flashlight and look down into the 3 picture tubes. If you see any flaking or dark spots in the phosphor, there will be a spot on the screen missing that color. Unfortunately, this is not repairable, as all 3 tubes would need to be replaced (like replacing all 4 car tires when one is completely bald) and that would cost more than a new TV.