Question about Apex Digital GB43HD09 43" Rear Projection HDTV-Ready Television

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Convergence and picture problems

I had an APEX GB43HD09 projection tv for 4 years. Recently, both the convergence and the picture got mess up.The top and bottom of the screen form semi circles. Pointed towards the top and bottom so that the middle gets pushed together and the edges are stretched. And I'm seeing triple pictures in 3 colors. I had the convergence problem before and was able to fix it in the setup menu, but this time nothing works. I think something is wrong with the projection tube but i'm not sure. If you have any sokutions to thses two problems please help.

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Re: convergence and picture problems

This TV probably uses two convergence IC Packs that will need to be replaced and be re-converged. There may also be a resistor or two that may need replacing as well. The projection tubes should last another 3 years or so.

Posted on Jan 01, 2007

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Need diagram to rebuild and fix convergence issues

In a APEX set change the convergence chips (2) AND use the original remote to adjust the set. There are several sites like TV that sell kits based on brand and model number.

Apr 30, 2012 | Apex Digital GB43HD09 43" Rear Projection...

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There is a bow in the picture top and bottom of screen

The tv have a problems known as a convergence problems,it is dead.Tv have colors R,G,B lines mis alignments,have shadows pictures or 3D picture look alike?Yes the tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts,must be replace on the tv convergence board to solved the tv convergence picture problems.The shop will cost u like $300-350 for parts and labors.

Jun 09, 2011 | Apex Digital GB4308 43" Rear Projection...

1 Answer

Will not converge

hello, the convergence ic's have gone bad in your tv . and sometimes they fail because of a 50 mfd @ 50v capacitor by each ic goes bad. if you have the skill at soldiering and desoldiering you may try repairing it yourself otherwise leave it to a qualified repairman. thanks .....techman...580-243-8025

Apr 01, 2010 | Apex Digital GB43HD09 43" Rear Projection...

1 Answer

I have a model GB43H09 apex tv. I am having a convergence problem, can this be fixed.;_ylu=X3oDMTEzbGQ5ZTZnBHNlYwNzcgRwb3MDMwRjb2xvA2FjMgR2dGlkA0g1MzJfMTQ2/SIG=126kbj3eb/EXP=1269389792/**http%3a//

Here is your manual if all it is is adjustment. It most likely is the IC's that go bad that handle the convergence circuits. It is not hard usually, but you do need some electronic skills to get this done right. Brad

Mar 22, 2010 | Apex Digital GB43HD09 43" Rear Projection...

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Picture on screen shrunk to about half size and color bands go around the picture - red, yellow, green, blue - almost looks like things are in 3D

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 projection 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.



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 can see some more examples and find a fix using this link on Fixya

Mar 22, 2010 | Apex Digital GB43HD09 43" Rear Projection...

1 Answer

Apex Mod# GB43HD10 The picture is now blurry or wavy.

Sounds Like your convergence ICs big black ICs will part number on them example STK394-020 Call Mats for Parts on ICs 1-800-628-1118 Also Call Encompass you can order whole Board if you want to you just unplug old board and plug in new 1-800-638-3328

Oct 01, 2009 | Apex Digital GB43HD09 43" Rear Projection...

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No picture on it.just went out or off

thecnical problem may be it a fuse on the main board or power supply.

Sep 04, 2009 | Apex Digital GB43HD09 43" Rear Projection...

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Apex GB51HD09 convergence

Please have it taken care of ASAP. It definitely sounds like Cold Solder joints on the convergence IC's. Cheap repair now, if you stop playing it. Every-time the convergence goes out, the ic's struggle to bring it back in and can't and therefor over heat. so please have it taken care of Pronto. Apex used a Samsung chassis which was a good chassis in that PTV.

Aug 19, 2009 | Apex Digital GB51HD09 51" Rear Projection...

1 Answer


it is necessary to replace 2 convergence Ic's associated resistors test and repair power supply voltages , then performed a convergence alignment all of this could be around $ 120.00 in parts. go to for parts

You rating to my answer is highly appreciate

Jul 03, 2008 | Apex Digital GB43HD09 43" Rear Projection...

3 Answers

Convergence and wavey picture problem

Actually you have 3 problems. The two that you listed and the third which is: Apex does not support their units. Ask anyone who has tried to get any service. Your problem sounds like a bad digital convergence box. I fix this problem several times a week but on name brand sets. Cost is usually less than $100 for the part. Some problems with Apex equipment can be fixed if the part is a common off the shelf part. That is not the case with your problem. Apex equipment is cheap for a reason. All posts that I have read say that they do not last long and you can't get parts. That has also been my experience as a technician. We don't even accept Apex units for repair anymore. Next time spend the extra money to buy a name brand unit and it will more than likely be repairable.

Jun 01, 2006 | Apex Digital GB5108 51" Rear Projection...

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