Question about Toshiba 27AF41 27" TV

1 Answer

Flat line on Toshiba tube tv

Hi, I have a 27" Toshiba Tube tv. It has great picture quality, no dead pixel, but once in a while it will turn into a bright flat line in the middle of the tv screen. The problem usually goes away if I turn off the tv and turn it back on again. So it's no a big problem, but it's kind of annoying. Someone in this forum had suggested to replace the vertical output IC. Can anyone tell me how much would this cost? Thanks so much for your help.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 133 Answers

It could be the vertical output IC, but there may be other possible causes which include:

- bad solder contacts on deflection yoke connectors or dirty connector contacts (on the circuit board and / or on the picture tube neck)

- bad solder contacts on the vertical output IC or associated components (check for little cracks in the solder around the pins, these are so called "cold" or bad / broken contacts)

- power loss to the vertical output IC - check for any burned resistors or other components around that IC, assuming you know which one it is - see which ICs are connected to the wires going to the deflection yokes (coils) on the picture tube neck and check them well.

You need to resolder any bad contacts, clean any dirty pins on the connectors and replace any burnt out components (assuming you can still determine the type or value of the component).

Since you mentioned the problem occurs once in a while, this means that the IC probably fails when it warms up, which can often happen if there are loose connections or bad solder contacts.

Anyway, it could turn out to be a faulty IC, i just suggested a few other things that can be fixed quite easily, and possibly without the need to replace any of the components.

regards

3rq8 (Triarcuate)

Posted on Sep 10, 2009

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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

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

The picture turns green for a few seconds then goes back to normal


Hi. If it's not a picturetube (internal) fault, you may look for bad soldering joints on the printed circuit board, located at the tube.
This contains mostly the RGB amplifiers. A bad soldering on the one driving the "green" cathode, may cause such problems. It can easily be detected by gently knocking on the latter. Also look at the actual CRT socket solderings.
It is most unlikely that the fault is located in the colour decoder. Faults there mostly influence red and blue. In a PAL system, only red and blue are transmitted. Green is produced by a matrix.
Finally, in the worst case there is an internal fault in the picture tube itself. Usually, the discolouring is very bright, shows retrace lines across, and even makes the system shut down due to excessive beam-current. good luck.

Apr 13, 2014 | ESA ET427E 27" TV

1 Answer

Color problem on Toshiba CRT TV


It sounds that the color mask inside the picture tube have been displaced due to hard shock. If so, it is irrepariable.

May 28, 2013 | iLO 2600 Television

1 Answer

7inch vertical color lines right side of screen all th time


Hi.

This website has the service manual ($7.79) with instructions to diagnose the boards. Unfortunately I am afraid that the problem is not a board but the panel itself.

Thin vertical lines in the middle of the picture mean that the panel is gone. Here an example of lines from bad panel in Toshiba LCD:Line Picture. (discussion: Avsforum). Sometimes the lines can be dark or in bright color.

The panel costs $339 (LCD PANEL ASSY).

Because of the price of the panel, the TV is not worth repairing unless under warranty.

Even if the TV is out of warranty call Toshiba and report the problem. As you can see in AVSforum page above the problem is affecting many users.

If Toshiba doesn't offer special conditions on repair (or discount on new), the TV is not worth repairing. Replacement of the digital board will hardly be a solution.

Only if you have wide bands, scrambled or flickering, then the problem is digital board (main board) or panel.If you have the thin pixel lines, then the panel is gone.

Dec 10, 2011 | Toshiba 40RF350U 40 in. LCD TV

1 Answer

My Toshiba 46XV540U LCD TV. Has ghost image plus many white vertical and horizontal line when it is turned on. These lines and the ghost image stay for 20 to 30 minutes and than the picture becomes clear....


Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish board that call T-CON board to do a replacement.This T-CON board sit in the middle at the bottom of the tv LCD screen panel.This T-CON board control all the picture pixels going throught to the tv LCD screen panel.

Jun 11, 2011 | Toshiba 46XV540U 46 in. LCD HDTV

1 Answer

My Acer AT4220B 42in. LCD TV, has a line through the middle of the screen and the picture quality is like foggy. Sometimes when you turn it on the picture quality is normal then after a while it turns off...


Sounds like not only is your backlight going but you have a bad case of dead pixels. You can do 1 of 3 things...

Turn your unit in under warranty for repair

If your unit is no longer in warranty you can brave taking it apart and replacing the glass unit and back lights yourself... Find the make/model of the screen after removing the plastic casing and type it in on either of the bottom sites,

www.sparepartswarehouse.com
www.laptopscreens.com

Or last option, sell it on ebay and lie lie lie about the quality of the unit and make sure that somewhere on the listing you put as is

May 09, 2011 | Acer AT4220B 42 in. LCD TV

1 Answer

Horizontal line in toshiba TVs


its the horizontal output IC

Feb 14, 2010 | Toshiba 28N33 28" TV

1 Answer

Toshiba 27WL46 27 in.LCD- Lines top of screen getting worse.


If they are vertical lines, then the LCD panel is going bad, it will get worst with more lines appear as time goes on.

Jan 07, 2010 | Toshiba 27WL46 27 in. LCD Television

1 Answer

No Picture On Screen


it sounds to me like your tube has gone , go to your local tv repair shop and order a new tube its quite cheap to do so and they should be able to get it you quite fast.

Mar 10, 2009 | Mitsubishi VS-60601 60" Rear Projection...

3 Answers

TV: bright line across black screen for several hours.


vertical output ic needs to be resoldered. careful leaving that bright line displayed on the screen as this will cause a permanent phosphor burn into the tube. this can not be corrected once burned unless you replace the tube. mch

Mar 08, 2009 | JVC Televison & Video

Not finding what you are looking for?
Toshiba 27AF41 27" TV Logo

351 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74379 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Jaime Hernandez

Level 3 Expert

2318 Answers

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

Answer questions

Manuals & User Guides

Loading...