Question about Mitsubishi WT-46809 46" Rear Projection Television

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My Mitsubishi HDTV 1080 Series WT-46809 TV turns on fine, But after about 4-5 minutes the screen fades to a "Blue Tint" and if I tap the top of the TV it Turns into a "Red Tint" and fades back to normal. But it will repeat over and over, if I just leave it, and dont tap it after it fades blue then it will stay blue for as long as the TV is on, when I turn it back off for about 10 minutes then turn it back on it seems fine but again after 5 Minutes it does it again. Any help? thank you.

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Posted on Jan 09, 2008

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SOURCE: My TV Screen turns green or blue after 10 minutes of the tv on

You have a chip that is overheating due to heatsink coumpound being dried up. You need to find that chip and heatsink and apply new compound to both parts.

Posted on Apr 06, 2009

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SOURCE: Mitsubishi TV #WS 5531 hd 1080 upgradable - Screen

Most likely burned out lamp.

Posted on Aug 11, 2009

ladywinn
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SOURCE: i have a mitsubishi 1080 series wt-42311

STKs,one of them controls startup if bad TV will not come on.STKs are big black ICs will have part# on them. call Mats for parts you have 2 replace both. 1-800-628-1118

Posted on Sep 18, 2009

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1 Answer

My Mitsubishi TV Model WT-46809 has the picture turn greenish pink after the TV has been on for a little while. What is the possible cause?


These sets did have one common issue where red, green, or blue would do what you are describing.

The set has 3 picture tubes and each has a small circuit board plugged to the bottom of it (bottom of the tubes faces down) and a ground would break loose or a part do the same.

I would examine the picture (see if you can take one and post it somewhere for me to see---picture will tell me a lot).

The ones with the ground broken usually show it more on the sides then in the middle of the screen.

Let me know all you can.

I am a top expert on this site.

Mar 19, 2012 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Mitsubishi with green screen.


This tv have a problems known as a covergenece problems,it dead.The tv convergence board must reqiure it 2 STK convergence ICS and some or all it resistors to change to solved the covergence problems.The shop will cost u $300-350 for parts and labors.

Jul 11, 2010 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

I have a mitsubishi 1080 series wt-42311 model. When I turn on the TV the green lite comes on then goes off? The TV wont turn on.


STKs,one of them controls startup if bad TV will not come on.STKs are big black ICs will have part# on them. call Mats for parts you have 2 replace both. 1-800-628-1118

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1 Answer

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You need to adjust the votages going to the crt's. As the flyback transformer starts to go out the voltages to the crts can go up and down causing the tv to shut off. It also causes red, green, or blue arced lines to show up on the screen. It can also cause some color fading in and out or flickering. Adjusting the voltages can fix the problem temporarily but in the long run it's a good idea to replace the flyback. Make sure you read up on how to do this safely.

Jul 21, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

WT-46809 Inputs show lines across screen


1. THE SYMPTOM IS BRIGHTER IMAGE ON THE SIDES AND DARKER IN THE MIDDLE. THE PROBLEM CAN BE WITH RED BLUE AND/OR GREEN. CHECK FOR PROPER CONNECTIONS TO THE "DAG COATING AND CONNECTIONS TO PIN 9 ON THE SOCKET OF THE AFFECTED CRT. MAKE SURE THESE GROUND POINTS ARE COMMON WITH CHASSIS GROUND.

Apr 25, 2008 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Blue is distorted


Find and examine the conv ICs, on their big heatsink. They may be unsoldered down at their legs, or need replacement.


Mr Bob
www.imageperfection.com

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1 Answer

MItsubishi WT 46809- not staying on when turned on


One or more fuse devices open==caused by convergence IC

shorted. Solution==replace fuse(s) and STK I.C.(s).

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