Question about Toshiba 50H13 50" Rear Projection Television

2 Answers

50H13 Red Convergence Problem

My the red on my TV just went out of alignment. the problem seems to be that the red signal is raised somewhat in the bottom-left of the screen. I tried the Touch Focus and it completes with an error. Same over and over again. I've read several article about adjusting the convergence using the service codes but don't feel completely comfortable with that. Is this just an alignment issue or something larger like a board replacement? I've had this TV for about 6 years. Bought new. Is it worth the service call and repair? Any idea what something like that would cost? TIA.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 398 Answers
Re: 50H13 Red Convergence Problem

I do wish people like troylove11 would stop giving advice on things they obviously know very little about. The Toshiba projection sets never have loose connections on the convergence IC's, and there are never bad resistors in those sets. There is no separate convergence board and there are no adjustments on any boards. The convergence adjustments are done electronically, through the remote in the service mode. Also, moving or bumping a projection set cannot cause a solder joint to crack loose. Your set has 2 large convergence IC's and one of them has burned out. This is very common in projection sets. Do not attempt to enter the service mode to make adjustments, because you will only be messing up the correct settings and when the new IC is installed, the colors will still be way out of alignment. Replacing a convergence IC is a very simple thing for an experienced tech, and it is well worth getting the set fixed. If your set uses the STK392-010 IC's, it is probably a good idea to go ahead and replace both IC's with the newer, upgraded STK392-150 IC's. If you have not changed the convergence settings, the picture will return to normal once the IC is replaced and very little realignment will be necessary. When I do a housecall for a set like that it takes about an hour and a half and I charge $150, but shops in your area will vary so ask around.

Posted on Sep 08, 2007

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,153 Answers
Re: 50H13 Red Convergence Problem

Yes, it could be from the convergence amp having a loose connection. Big Screen tv's have problems with loose connection especially when moved or bumped. If you can take back off and find convergence amps then safely tap on ic's and see if it changes picture then it's maybe just aloose conn. If no change then you need to check resistors inline to red. At the most replace IC's these are the large STK's by a heatsink. Hope this helps!

Posted on Sep 07, 2007

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

50PL9126D/37B 50 in. HDTV DLP TV: the red green and blue colors dont align properly...

Your convergence is out. If it's just out a little, you can adjust with your remote or with older sets there are knobs. If it's way out then your convergence block went out and you'll need to replace it yourself if you're technically adept or take it into the shop for repair.

May 17, 2010 | Philips 50PL9126D/37B 50" DLP TV

1 Answer

The screen seems to have two of the same image, green and red.

The fix is to replace the two Convergence IC's( STK392-110's) with STK392-150's. They are located to the right side of the chassis and mounted to large heat sinks. Be also on the look out for some burnt resisters and or discolored resistors that failed becuase of the IC's failing. These would be located just to the left of the heat sinks. If they are burnt or severly discolored, you will need to replace them with the exact valued resistors. In this high current circuit it is a must.
I hope this helps,

Jan 07, 2010 | Hitachi 60FX32B 60" Rear Projection...

1 Answer

Red color convergence issue; Red lines are curved

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail

Nov 24, 2009 | Projection Televisions

1 Answer

When tring to use the red convergence it seems to be twisting.

Go to this Blog. It "should " solve the problem.
Really, Really simple, do it your self solution !!
Instructions and pictures included :D

Ken , the poster of that Blog writes........

"The problem is with the convergence via the voltage on the
color ray gun tubes that get out of adjustment.
They are also known as retrace lines."............

This blog covers many makes and models with many
issues solved, just with that one solution

Give it a try, it's FREE and SIMPLE :D

Hope the blog helps you also :)


Mar 07, 2009 | Sony KP-61XBR48 61" Rear Projection...

1 Answer

Adjusting the convergence after replace convergence chips

Hello fmnii,

Believe it or not the easy part was the replacing of the convergence amplifiers. Now for the hard part, static and dynamic convergence of the TV. To do this, what I usually do is not trust the onboard cross-hatch and alignment patterns, for this I use a signal/pattern generator to create the cross-hatch and alignment patterns. I follow the static convergence instructions first, and then the dynamic convergence instructions. This process taks about 6 - 12 hours (Yes 6 - 12 hours) if done correctly. I say use the instructions because each TV set is different. It sounds like you have your static convergence well in hand and you just need to do the dynamic.

If you can, try to get a signal/pattern generator (I use the VA62A).

I wish you well,

Thank you,


Feb 03, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Convergence issue

try fixing the convergence 2 after your've aligned the convergence 1 - the second (accessed via the set up control) let's you adjust on 9 different axis to align the red and blue tubes to the green. you select which + sign you want to adust by pressing the corresponding number for the + ie 1 for the top left, and 9 for the lower right corner.

good luck (note - you cant change the green only the red and blue, if the whole edge is a mess try moving the image (you need to be in zoom mode, and then access the position adjustment via the pitcure set up screen.

Nov 05, 2008 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers

RED Convergence Alignment issue

Replace both STK392-110 Convergence IC's with Toshiba or Sanyo quality................No cheap IC's !!!......................T.

Aug 16, 2008 | Toshiba 43H71 43" Rear Projection...

1 Answer


Samsung parts for convergance problem

Convergence amp ic bad
Sony Convergence

Jan 29, 2008 | Samsung HCM5525W 55" Rear Projection...

1 Answer

Panasonic PT-53WX42

convergence IC bad

Jan 01, 2008 | Panasonic PT-53WX42 53" Rear Projection...

2 Answers

Red convergence out of range.

Replace STK393-570 convergence IC. located on center PCB.
re-check alignment........T.

Oct 24, 2007 | Mitsubishi WT-42311 42" Rear Projection...

Not finding what you are looking for?
Toshiba 50H13 50" Rear Projection Television Logo

104 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

The Knight
The Knight

Level 3 Expert

66352 Answers

Are you a Toshiba Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides