Question about Mitsubishi WS-55809 55" Rear Projection Television
Cant get the red convergence to move left and right
If the red line is blurry and you have adjusted the screen focus control and does not work then you prob have a bad red CRT or bad red CRT fluid.........
convergence STK have nothing to do with the red being blurry
Posted on Oct 23, 2008
Bill may you help me?
I have a Mitsubishi 45" Projection TV VS-4543.
The problem I am seeing is that there is a red gosting/double image. I found out that the coil L8W01 was burnt out and the trace pad that leads to pin1 of connector VR was also burnt on the MAIN PCB board. I had replace the coil and retrace the trace pad, also I had replace a new red convergence IC STK391-020. The problem still occure. I try to adjust the color alignment and the convergence alignment using the remote controle. The red line is not thin and sharp like the blue and green line. It is blurry and wide. Also the the red wasn't able to move in to the center of the alignment pattern when trying to adjust 5 different position during the convergence adjustment. What else can cause that problem? Please Help.
Posted on Jan 20, 2008
Change both STK392-570 convergence Ics (Mitsubishi Part # 267p150010) and then do a re-alignment..
Posted on Dec 09, 2007
If red will not move in some direction you have a convergence problem--most of these sets use two of the STK-392-110 convergence chips---both along with any of the protection resistors around them that are open need to be replaced and the set adjusted.
The protect resistors are usually in the 50A61 1.8 ohms and dark gray in color----You can buy a pair of the chips for less than 14 dollars plus shipping on Ebay---the resistors should all be checked--almost any electronics supplier will have those.
It depends on if you are able to do the repair yourself or have to have someone do it for you-----This set would require you getting the chassis loose and tilting if up so the bottom faces the back of the set--you will have to unplug some of the plugs to do this.
The chips are 2 1/2 inches wide and 1 1 /2 inches tall with 18 pins each---they are black in color and will have the STK-392-110 NUMBER printed on the front of them in white.
The reason they fail is because the back of each chip is metal, a white grease is applied to each when they are mounted to the two large metal heat sinks with fins to keep them cool----after several years the grease dries out and one of the chips overheats and fails.
If you think you can do this repair I can tell you what you will need and give you general instructions on how to get at the chips----
If you cannot do this repair--shop around your area as most shops charge at least 300 for this type of repair--Whoever you get to do the repair: Make sure they replace BOTH chips or you will have the same problem again in a few months.
If they say it has to go to the shop---keep looking as any good tech can do this repair in your home in about a hour---I have done hundreds of these repairs.
When you consider that the total parts cost will be under 25 dollars, if you can do this or have a friend who can do it for you---you can save the set and a lot of money.
If you get the set working---I can tell you how to get into the TECH menu to fine adjust the convergence all over the screen--in the customer menu you are usually only able to adjust in about 9 places.
IF YOU NEED HELP OR ADVICE OR INFORMATION LET ME KNOW HERE.
I am here to help people
Regards, SD TECH
Posted on Oct 28, 2009
U check all the resistors with the Ohm Meter?All the resistors u check it in tolerance?Resolders all the resistors,so it make good resistance for the ICS?U do all these steps,u still have problems,Ur ICS some how it shorted it dead,again.
Posted on Apr 02, 2010
SOURCE: red gun convergence problem
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....
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
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.
Posted on Jul 11, 2010
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