Question about Mitsubishi WS-55809 55" Rear Projection Television

1 Answer

Mitsubish 55'' projection screen. Approx. 8 years old. Every now and again there is a color shadows. Is this fixable and if so would it be an expensive fix?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Mitsubishi Master
  • 14,553 Answers

1.) If it is a WS-55809 it uses 2 STK-392-570 Convergence Chips--I have seen a lot of these sets where the chips become flakey or intermittent.

2.) You can buy both chips on Ebay for about 13 dollars for a pair plus shipping.

3.) IF you are able to do this repair yourself you will save a lot of money---I have start to finish step by step instructions for this set--If you want them I can email them to you--they tell you what you will need to do the repair and I also have some photos of a few things on the board you may need to look at----

4.) If you keep using the set sooner or later the problem will get worse---at some point the set could even shut off and not turn back on.

5.) If you are not able to do this repair yourself shop around---most shops TRY to charge 300-400 for this repair---I have done hundreds of them here and charge 200-250 total.

6.) Make sure whoever you get to do this repair changes BOTH convergence chips--if only one is replaced you are going to have the same problem again in a short time.

7.) Shop around and if a shop says "It has to go to the shop" keep looking----any good tech can do this repair in your home---it takes about 1 hour.

If you have any questions or need advice reply to this posting here.

I do this here for free so if this information has helped you take a minute and give me a vote here.


Posted on Sep 10, 2009

  • futbol323 Nov 08, 2010

    Hey SD Tech,
    I have a Mitsubishi Projection TV with a bowing blue ray line towards the top of my screen. I'm going to try and purchase these two chips as you suggested on ebay. Please send me any diagrams with repair instructions that you have. My Mitsubishi Proj Tv Model is : WS48511.
    and my email is



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Tv has shadows

If 3 d looking or colored lines etc on this model listed here it is a convergence problem and fixable.

Dec 23, 2012 | Toshiba 55H70 55" Rear Projection...

1 Answer

9 year old shadowing. Is a bulb out?

No,this tv don't have a projection bulb inside,it used CRTS tubes like R,G,B guns technology.The tv problems u are having it is call convergence problems,it is dead.The tv convergence board it dead or dying that why tv have R,G,B colors lines misalignments,have colors shadows picture or have 3D pictures look alike.The tv convergence board must require changes like 2 STK convergence ICS and some or all of it resistors too.To fix the tv convergence board to solved the tv picture convergence problems.The tvs Shops will cost u like $300-350 for parts and labors.

Jun 13, 2011 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Color shadowing on screen

I had similar symptoms about a year ago. Also came on sudden. The red convergence chip had burned out (poor heat sinking on this model Hitachi). Replacing the color convergence chips fixed it. ($50 for parts.) First, however, have you tried the "magic focus" function? That's explained in the manual, which is available online IIRC, but I'd have to look for the link if you need it.

Mar 02, 2010 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer


This is a common problem. Its called a convergence failure.

Problem #1) Convergence


Dec 25, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Mitsubishi WS-55809

can you post a picture of what the picture looks like? If so I should be able to diagnose the problem

Apr 30, 2008 | Mitsubishi WS-55809 55" Rear Projection...

Not finding what you are looking for?
Mitsubishi WS-55809 55" Rear Projection Television Logo

104 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Televison & Video Experts

matt martin
matt martin

Level 3 Expert

1213 Answers

The Knight
The Knight

Level 3 Expert

74459 Answers

Jaime Hernandez

Level 3 Expert

2318 Answers

Are you a Mitsubishi Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides