20 Most Recent Apex Digital GB4308 43" Rear Projection EDTV-Ready Television Questions & Answers


There is a bow in

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.
6/9/2011 4:05:47 AM • Apex Digital... • Answered on Jun 09, 2011

I have a red reflection on my screen. I heard it

Go into your main menu and scroll down to picture. Next scroll down to convergence press select. A white cross should appear on your screen the object is to converge all the crosses into one untill all the crosses appear as one white cross. The onscreen directions will tell you exactly how to do this. Next press continue and several little white crosses will appear across your screen. Do the same for each one of these white crosses. This should solve your problem.
8/14/2010 11:30:32 PM • Apex Digital... • Answered on Aug 14, 2010

Samsung Tantus projection TV 40 inches. the

U have the early warning problems of the convergence problems.Do the manual or auto convergence adjustment until,u can't do it anymore.Replaced all the parts,that make the convergence board to work.
6/22/2010 4:00:44 AM • Apex Digital... • Answered on Jun 22, 2010

Color wont move off of mute to align

maybe the degausing coil is defective or your tv is de magnetise or the color control is defective. if no just consult your problem to APEX service center near you
6/19/2010 4:08:50 PM • Apex Digital... • Answered on Jun 19, 2010

Convergence ajustiment

Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded overs. To get fixed either call in a local TV repair company or goto sites such as Tv Repair Kits to get a repair kit with instructions. Here is there link.


They have put together complete kits for most models that include the parts, step by step photo instructions, repair assistance, etc.
6/14/2010 1:15:02 AM • Apex Digital... • Answered on Jun 14, 2010

There is a red outline that seems to slide and the picture bows

Projection sets have two very common problems.

The first common problem is convergence

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,Akai,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...

*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
6/6/2010 4:45:53 AM • Apex Digital... • Answered on Jun 06, 2010

Auto focus button was pushed a few times and now

likely a convergence failure. if you push the button over and over, sometimes it will throw the set out so far that it cannot align anymore.. the sensors need to see the lines to do the auto alignment. you probably need new convergence ICs, repair is tricky and requires soldering. estimate = 200-350 $
5/26/2010 3:27:50 AM • Apex Digital... • Answered on May 26, 2010

Screen displays vert. bowtie


You have a convergence issue, first see if they will move manually in your menu, they should be able to move up down left and right, and if not this is when two chips labeled STK392-xxx Failed. They can be located by finding the largest heat sinks in the unit.

Along with the possibility being a open resistor and or open fuse in the convergence circuit . All of the resistors around these chips should be checked pay attention to the ones that are standing up and they all should read low ohms, If they are in the k ohms they are probably open which is bad ,This is a tricky repair, if you have Never done this repair I don't suggest it friend.

But if you are willing to tackle this problem the only step by step procedure I found for you would be to watch someone do the repair ( http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm ), and this I found on the internet in the convergence problem screen. This will give you a idea of the work involved and also what the parts look like. Now I also have sites were you can pull up manuals, check here




Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!
5/21/2010 7:41:03 AM • Apex Digital... • Answered on May 21, 2010

How do you fix the Convergence, Can it be a fix

No,Ur 2 STK convergence ICS are dead,and some or all it resistors are too.The shop will cost u $300-350 for parts and labors.
5/15/2010 4:31:28 PM • Apex Digital... • Answered on May 15, 2010

Cant get right color and see wavy lines

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

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted

You can see some examples and find a fix here...

1/10/2010 3:35:03 AM • Apex Digital... • Answered on Jan 10, 2010

3d red and green picture

Here is the fix for this problem ;
V502 (2sa1015y ) =nte290A ,V502A (2sc3852)=nte56 both def. use all parts supplied w/nte 56.Replace both N504 & N505 (stk392-040 )
You will likely need to call a good TV Tech to do this repair.
8/4/2009 9:55:35 PM • Apex Digital... • Answered on Aug 04, 2009

My projection tv picture is messed up

I'm not to sure what exactly is wrong with your tv, but I do know that it is NOT the convergence board. I have the same problem with the same model and was told to replace the board. I waisted $85 bucks. The only other thing that I can figure is it must be the STK's inside the TV. If you fix yours please repost and let me know so i can fix mine.
7/16/2009 9:33:31 PM • Apex Digital... • Answered on Jul 16, 2009

My Panasonic Projection tv is acting weird. The

Since the set seems to recover for short periods of time, it suggests bad connections rather than defective components. If you have a local service shop that can "resolder" a number of poor solder joints for not too much $$,. then this should be cheap. It is unlikely that a board needs replacing although it is possible. The static in the channels needs further investigation. If it is the same on all channels, there is likely a problem with the tuner. If it is localized to a group of channels, then check all your cable connections. A bad ground will show up as static in some channels with others appearing normal.

Keep us posted.
6/18/2009 8:54:01 PM • Apex Digital... • Answered on Jun 18, 2009

No picture

Let your local TV repairman check it. Don't touch anything inside it nor open it.
5/26/2009 5:13:09 PM • Apex Digital... • Answered on May 26, 2009

Tv power light blinks but it won't turn on apex gb43hd10

I've seen this problem several times on this model. Your TV is going into shutdown because the HV block is defective. You can take out the Anode lead and isolate it carefully then turn the set on. If it now turns on, and stays on, then the high voltage block is bad. Getting this part is another, bigger problem.
5/15/2009 10:54:14 PM • Apex Digital... • Answered on May 15, 2009

52 rear projection

Your APEX tv has a convergence problem which is fairly common.

Check with www.TvRepairKits.com. they may have a kit for your model.
5/14/2009 2:25:22 AM • Apex Digital... • Answered on May 14, 2009

Tv will turn on but nothing shows up

here is a simple test to know whether to call a technician,...first, check all connection including the antenna or cable lines to your unit.if not, tap the unit for 2 to 4 times.while tapping watch what happens to the picture.if the unit turn on or becomes okay, i suggest to call a tech.it needs resoldering or something inside has loosed contact.
5/11/2009 3:37:34 AM • Apex Digital... • Answered on May 11, 2009
Not finding what you are looking for?
Apex Digital GB4308 43" Rear Projection EDTV-Ready Television Logo

Popular Tags

67 questions posted

Ask a Question

Usually answered in minutes!

Top Apex Digital Televison & Video Experts

Grand Canyon Tech
Grand Canyon Tech

Level 3 Expert

3867 Answers

Cindy Wells

Level 3 Expert

6694 Answers

Brad Brown

Level 3 Expert

19187 Answers

Are you an Apex Digital Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Apex Digital Televison & Video

  • Apex Digital Televison & Video

Most Popular Question

auto focus button pushed few times now

  • Televison & Video