Question about Mitsubishi WT-46809 46" Rear Projection Television

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Have a Mitsubishi wt-46809 tv and has a 23 shut down. ARCING is seen between the focus and the screen in the red picture tube. When the HV line for red is removed I am able to see the short as the tv doesn't go into shut down. No resistance is measured as it appears to be a dynamic short. Tried to eliminate with a 350Vdc cap and no success. How to restore or is there a company that sells rebuilt tubes?

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Yep sounds like a shorted red crt for sure. You can send the tube assembly to a company called Video Display for rebuilding. They do good work and are relatively cheap. I have dealt with them often and no complaints. When they rebuilt them they replace the phosphor as well as the entire gun assembly.

Posted on Jun 16, 2009

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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

My Tv has red light (color) out of focus..I've tried tuning the lance but it's not the problem in the lance..it's something else..don't know what..do you?


Your TV has three picture tubes which are aligned to properly converge the projected light beams on the screen. Each picture tube projects a single color of Blue Green or Red. During production your TV was carefully adjusted to properly align these colors. As a feature you have the ability to adjust these colors.thats called convergence.If you don't have a manual to show you how to adjust you can find one here http://www.mitsubishi-tv.com/support.html

Mar 03, 2010 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

How can I diagnose the power supply unit in this set? I suspect it is the cause of my problem. Error code 23, screen shrank in and out a couple times and turned off a couple times, now wont come back on....


Hello hellian82,

The problem is the arcing red tube, it can be replaced or rejuvenated by qualified TV technician. The arcing is the result of a spark gap being formed in the picture tube resulting in a short between the HV anode of the tube and ground. Replacement of the tube is preferred, but the tube can be rejuvenated using a CRT rejuvenator.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Jun 23, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Double vision on my Mitsubishi 46 inch width screen--TV is 5 years old


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Mar 16, 2009 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

WT-46809 will not stay on


Good Day, dimen;
This looks great. Check this out;

SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB. Good Luck, big IRISH.

Aug 29, 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

Fine Yellow Lines


The lines I believe are retrace lines (if I interpert correctly) and may or may not be corrected by turning down the screen controls red green and blue. But first I would see if the 200V source that feeds the video outputs on each crt board is there or low. If so the problem would be a resistor or 200-250V capacitor that feed them. (200V source usually off the HV transformer secondary.

Mar 16, 2008 | Mitsubishi WT-46809 46" Rear Projection...

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).

Oct 08, 2007 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Wt 46809 Projection TV Mitzubishi


First check threads and do self diagnosis. Then live chat!

Oct 08, 2007 | Mitsubishi WT-46809 46" Rear Projection...

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