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Question about Apex Digital GB55HD09W 55" Rear Projection Television

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Convergance green image is to far to the right and goes into a double image

I have a similiar problem about the convergance box that has already been posted but my green image is to far to the right. when I go to adjust the blue and red the screen shakes and cause a double image of the green. I have saved where I was at in the adjustment but when I turn my tv back on it doesn't save the location. I located the ICs on the circuit board I and I didn't see any cracks in any sodder on the boards. The ICs are marked STK 392-020. I just wanted to know if I am looking at the right ICs and how I can fix this Problem.This has happened before and a repairman came and soddered some cracks. It has been less than a year and I am facing the same situation.

Posted by Chad Guntrum on


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If you know how to solder and unsolder and understand the circuitry of a tv set, then those are the IC's you will most likly need to change. I would look at the fusable links on the board also. If you dont have the training for TV's, this is not the place to begin experimenting with. good Luck

Posted on Aug 11, 2006


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Related Questions:


Why does my hitachi rear projection tv has double image?

Are the double images different colors, such as red or blue or green? If so, the projection unit is "out of convergence, meaning the images are not superimposed on one another. That requires a convergence generator, also known as a video alignment generator.

I have a sony big screen kp57wv600 and the picture looks like I need 3D glasses. The pictures has a green and red hallo all around the outer picture. The picture is clear in the center and goes out and is...

Sir the problem of your tv is the convergence to narrow the problem try to adjust first the convergence settings using your original remote go to setting menu then to the convergence setting, you can adjust the red and blue convergence, you should be able to adjust the red and blue left, right and up, down you should align the red and blue to green but if you cannot move them far enough or if you cant move them in any direction the convergence IC is already defective replacing this IC will fix the problem, you will find this convergence IC attach to a large aluminum plate this aluminum plate is the heat sink. It is easy to locate if you remove the back cover of your unit be sure to unplug your TV
this is the convergence IC if you remove this try to observe also if there is a cold solder or dry joint because sometimes this cause your convergence to malfunction observe the solder part of the convergence.
This is a cold solder or dry joints you can fix this by resoldering using a soldering iron, soldering lead, and desoldering pump but be sure not to connect separated pins it may cause much damage to unit if accidentally solder together. To replace the IC convergence try to check this link http://www.tvrepairkits.com/xcart/product.php?productid=19971&cat=1538&page=1 hope this helps good day and best regards.

Red, green and blue colors don't match up on screen.

Please replace convergence out ICs (usually two) in TV.
If it is Hitachi 43UWX10B then its convergence out ICs are available in Part Store

Samsung HCN4727W Rear Projection TV, green screen, audio works

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai2_bing.gif,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Double Image Red and Green

Here are some of the most common symptoms and example photos of a convergence problem

  • 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.

Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

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


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

Pioneer SD-P5185 Rear Projection has intermittent double vision

Sounds as though the output transistor(s) on the color convergence board are going bad or already have. If handy with Electronics; get service manual and check the emitter voltage.

Double image with red and green outline on image

Unit will require the 2 STK392-110 convergence amps to be replaced along with a couple of low ohm resistors.

61 Hitachi Ultra Vision has double image

Replace both of your STKs big black ics If they are STK392-110s upgrade to 180s better ics Electronix has them call 1-800-223-3205

Seeing double image in three colors

Its a convergence problem for sure ,,,if you cant move the red or blue (green is stationary) then your problem lies on the convervence module.. requiring ....mostly new output ICs like STKs your going to need a tech, for convergence is a common problem with rear projectors and requires patience and a expert to get it back just right. good luck

Double vision with a lot of yellow color

This looks like bad convergance. If only one color is affected it may be one of the convergance IC's. It is best to replace both IC's though. If you change the IC's then check the resistors next to the IC's. Use the exact part numbers. STK392-110 IC's can be upgraded to a STK392-180 for better heat strength. (That is why they blow, too much heat generated. Use a liberal amount of Silicone Heat sink compound.) A shorted IC will usually blow a resistor. If a bad resistor that isn't changed it will look like the new chip is bad. Make sure that you use the same wattage and the exact value (Ohms). Your convergance will not be right with an off value resistor. This info works for about any other brand Projo TV. Cheers, Lee http://www.crazycomputers.com
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