Question about Televison & Video

1 Answer

Will not 'Touch Focus' - Toshiba 42H83

Have a Toshiba 42H83 that will not 'Touch Focus' - I can go in and manually converge it with no problem. I have also noticed that during the 'Touch Focus' that the red and green lines are nice and tight, were the blue line is not. I just replaced the convergence IC's with stk392-150 (had 110 in it) using the thermal grease etc. Any help would be great!

Posted by on

  • johniec Dec 20, 2007

    Yes, the resistors looked good and the IC's that I got were not generics(got them from a local shop and told them that I don't want that china garbage) - I think they are Sanyo's. What about soldering these wires? Can you give me more detail on this? Thanks

  • johniec Dec 20, 2007

    I did save it and seems to be working good and have tried several times in different screen formats to run the touch focus, I do not have an HD signal right now to check that out. I don't have service literature yet but I am considering getting it.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,694 Answers

1)I have yet to learn any advantage to replacing -110's with -150's
I think there is a misconception that increasing numbers =
better,more durable results....Actually, using OEM or better
quality should be most important.Generics from any source
tend to be seconds,thirds, junk ! Name brand are first quality
2)Check B+ feed resistors next to convergence IC's = burnt ?

3)Solder wire jumpers on signal board = 008,010,017,600,etc.
prevent maitenance

Posted on Dec 20, 2007

  • Vista Electronics Dec 20, 2007

    Forgot jumper 048.....if you develope a bad connect,the result is blown fuse F850,F851 = feeds to convergence IC's



    If you can manually converge in servicer menu,did you save your

    adjustments ? Do you have Hi-Def signal ? 1080 I signal might

    require seperate converge / save procedure......



    Last, did you manually converge in customer menu and SAVE

    before activating touch focus ?



    Do you have service literature ???

×

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Toshiba 42h83.... The blue convergence will not line up. The horizontal will but the vertical will only move so far. when touch focus starts the reds and greens are perfectly strait the blue vertical is...


bmarino18,

Initially I would have told you to replace the convergence ICs but after reading your post carefully I think you could have a problem with the convergence box. The lines can only be bent/curved for two reasons. One - the yokes are bad causing an undue strain on the power supply and not being able to correct the problem. Two - the convergence box/board is bad and is not holding the settings causing the curve you see. I cannot tell you which problem you have. You wil have to determine this. I do have a tip at http://www.fixya.com/support/r4273935-replace_digital_convergence_box which may be helpful.

Thanks for using FixYa and for the great rating.

hardrocko

Dec 08, 2010 | Toshiba 42H83 42" Rear Projection...

1 Answer

My Toshiba 42H83 has developed a color problem. The color blue is about an inch off the other colors, the picture looks like a 3d movie without the glasses. I have used the touch focus button on the...


Alot of rear projection t.v.'s have a convergence option in the menu on the t.v. There you can set the try to set the colors back how their supposed to. Mine has a cross in the middle of the screen and you just have to try to get all 3 colors to line up. Unfortunately, the actual lens inside mine has to be aligned so it doesnt work. Just something to try though, hope it helps.

Jan 05, 2010 | Toshiba 42H83 42" Rear Projection...

1 Answer

I have blue archimg on the bottom of my 42h83.


replace the two STK392-110 convergence Ics and the six 1.8 ohm 1watt resistors.

Dec 06, 2009 | Televison & Video

1 Answer

Colours on the right side are unbalanced


run auto convergance from the menu it might be called touch focus on that model

Nov 21, 2009 | Toshiba 42H83 42" Rear Projection...

1 Answer

Convergence issues with Toshiba 42H83 - Red lines will not align


Absolutely! if the consumer control has failed to rectify the problem you need expert help. There are two control boards near the power supply 1 or both are involved and more than 90% of the time both of the boards have to be replace otherwise the problem will occur again in a short time.
It is not a DIY project for the unskilled as it has to be tuned correctly when it is installed.
Better to leave it to the professional

Please rate the help to keep the FREE service online ++++

Aug 31, 2009 | Toshiba 42H83 42" Rear Projection...

1 Answer

Toshiba 42H83 Touch Focus Problem


I just got finished repairing the same model . The convergence modules are bad cost of repair is 250.00 for a service center to fix. My advice would be call your local service center tell them what i told you bad convergence ic and ask them how much they charge,


thanks doctor video good luck since 1987

Jun 14, 2008 | Toshiba 42H83 42" Rear Projection...

1 Answer

Double outline "red" around images


Hi you have bad convergence ic stk modules ,Cost for repair center to fix is 250.00. call your local repair center ask there prices on convergence ic repair. It is a very common problem every 3 to 5 years .Our service center does a lot of these.


thanks doctor video 1987

Jun 01, 2008 | Toshiba 42H83 42" Rear Projection...

2 Answers

Toshiba 42 inch rear projection T.V.


this sounds like a convergence loss... the most likely cause of this is what is known as stk's or convergenc ic(chips) have gone bad.. also it cound be the output resistors. most likely need replaced

May 12, 2008 | Toshiba 42H83 42" Rear Projection...

1 Answer

42h81


I am having the same problem with my red lamp. i get an error on the touch focus and I cannot manually converge the red lamp.
let me know if you find out a way to fix the problem

chad

Dec 27, 2007 | Toshiba 42H83 42" Rear Projection...

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

220 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75304 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Cindy Wells

Level 3 Expert

5382 Answers

Are you a Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...