Question about Toshiba Televison & Video

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I have a Toshiba 55 inch LCD tv 55l621U with blue screen. I just replaced the t-con board. still have the same issue. Power board seen to be ok I got all the volts going to the main logic board

Posted by jose aracena on

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Ngoro

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  • Toshiba Master
  • 2,552 Answers

The most common reason for a TV to display a blue screen with no picture is because the source device has not been set to the proper mode.
If you are using a cable or satellite set-top box, ensure that it is turned on and set to an active station. If the set-top box is connected to the television using a coaxial cable, then the television should be set to Channel 3 or 4 to receive the signal.
If you are using a VCR that is turned on, but not playing a tape and not tuned to a receivable channel, then a blue screen will be displayed on the TV. To resolve this, turn off the VCR or tune it to a receivable channel. If a cable or satellite set-top box is connected to the VCR using a coaxial cable, then the VCR should normally be set to Channel 3 or 4 to receive the signal.

Posted on Feb 20, 2020

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5 Related Answers

westytech

vidal chavez

  • 120 Answers

SOURCE: Westinghouse lvm-47w1 picture goes dim

Hello, I can tell you from experience that this is an inverter issue. Both the master and the slave have several transformers and sometimes you can't tell if they are damaged or not. I would recommend testing the leads from the inverters to make sure which one of the two is the one causing the dim picture.

Posted on Apr 15, 2010

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Anonymous

  • 1 Answer

SOURCE: I have a Samsung LNT4665FX with screen problems. I

To solve this type of problem, you need a piece of white chalk. Draw a line around the area where the set is at. Call a priest - and lay the poor thing to rest!!!! This isn't the first time Samsung has "dropped" junk onto its' customers. Their dvd players also had problems with their DSP I.C.s that would over heat and cause the video playbacks to "break up". Don't waste any more time or money on the product!!!!!

Posted on May 18, 2010

russtash

  • 160 Answers

SOURCE: MAG 3200 Lcd TV I

Hello.
Normally T-Con board have nothing to do with powering up of TV. It's only affecting image when TV is on. So we can discard T-Con as a suspect for now.
Remove "new" main board and install the old one. If TV powering up and back light comes on - you've purchased defective Main Board and you should return it for exchange or refund. It happens all the time, boards that they sell most of the time are refurbished and sometime nothing was done and they send defective board to the other customer by error.
In case that TV is not powering up even with the old main board - look for something that you have done during replacement (like forgotten or overlooked connection, broken/bended pins etc.).
Good luck!
Russ.

Posted on Aug 28, 2010

welcomejee

Shahid Electronics

  • 10594 Answers

SOURCE: I have a Samsung Ln32A450c1d

Hi,
Basically it is problem of LCD Panel (screen) however some times T-Con board replacement fixed the issue (T-Con board is part of lcd panel but some part shop sell it separately). Main board is not related with this kind of problem.
Required T-Con board is available in ShopJimmy.com (click the link to view available boards)
If T-Con board replacement does not solve half screen vertical lines problem then LCD Panel will be replaced and it would cost approx new tv price.
Hope this info will help.
Thanks.

Posted on Mar 28, 2011

chapelure09

Anoni Muss

  • 1 Answer

SOURCE: Hannspree 28 Inch Lcd Tv Model Number HSG1075

Stop buying hot TVs folks. If you bought it legit, you can take it back.

Posted on Oct 23, 2013

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
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