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Toshiba LED tv 50L 1400U lower half of screen dark shading and increasing day by day.

Toshiba 50L1400U Lower half of screen dark shading. Can see menu. Help needed to isolate to board or LED strip. Thanks

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 67 Answers

SOURCE: Samsung PS42S5hX - Bottom half of screen flashing black sometimes permanent, does not do this all the time.

might be y drive board bottom half it connects to the y sus board usually on the left side if your looking at the set with the back off

Posted on Jul 05, 2007

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dofsqaa
  • 169 Answers

SOURCE: no menu & calendar written on lower screen

Sound like the phones software might be corrupted, you can reinstall the whole system, read on...

You can hard reset the phone (Factory Settings)
This will reinstall the operating system inside the phone back to how it first was.
(internal memory gets formatted then the rom reloads the os back)
(Solves all kinds of problems.)

Switch the phone "OFF"
Hold "3" (button) + "Green Call" (button) + "*" (star button)
Switch the phone "ON" while holding the above three buttons.
Continue holding for about 20 seconds then let go.

Please note this will format all the saved information stored in phone memory. including phonebook numbers (if not stored on SIM card).
Try to make backups first.
You have been "Warned".

Best of Luck.

Posted on Jun 25, 2008

Ecollier2012
  • 3459 Answers

SOURCE: Convergence on lower half of the screen is off, green arc appears

Your TV most likely has a Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

Posted on May 14, 2009

  • 80 Answers

SOURCE: Screen lower half goes black/blank

The lower "Y Buffer" board is defective. Best repaired by a technician, or contact Phillips support for the part if you think you are able to replace a small circuit board on your own.

Posted on May 21, 2009

  • 1 Answer

SOURCE: TWO DARK SPOTS IN THE SCREEN

My tv set as the same problem. By doing some research on the internet found out it is the optical block. Very expensive to fix if you do not have extended warranty coverage. Apparently, it is not an isolated case and many many many owners of this set are experiencing discoloration after owning it for a few years. Sony will tell you they don't know anything about it. Visit this web link for detailed information. http://sites.google.com/site/sonylcdrptvproblems/sonyrearprojectionlcdtv-opticalblock

There's a lawsuit pending. Sony apparently knew about these defects and they continued selling them. No more Sony for me. I feel betrayed. Whta is worst, when you call Sony they play dumb and treat you like you are an ignorant person. Normal tear and wear they say. Only 4 yrs with this unit and paid more than $3k. Normal? Unacceptable.

Posted on Jan 28, 2010

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I have a 50L-1400U flat screen Toshiba Led TV, i have had it 15 months and the screen blinks like a turn signal on a car, it has sound and a good picture when it isn't blacked out


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Oct 06, 2016 | Toshiba Televison & Video

1 Answer

The brightness on my Toshiba TV is down, i still get a picture but can barely see anything on the screen. Now I'm not sure should I replace the main board or should i replace the power supply.


Hard to say since you didn't say what model of tv you have but I would say probably neither. If it is a CRT tube you are out of luck...you can try to turn the brightness up. If it is an LCD, it could be the backlight or the power supply to the backlight that is failing

Good luck

Mar 28, 2016 | Toshiba 50L1400U 50" Class 1080p LED TV

1 Answer

Top half of tv is white it started with just a line from side to side and has become worst


half the picture on my tv screen turned completely white. ' IGN ...

www.ign.com > Boards > Community Central > The Vestibule

IGN
May 3, 2014 - 7 posts - ‎4 authors
what half? down the middle or every line of pixels? did you google the issue with your tvmodel? my samsung has issues with bad capacitors ...

samsung led ua40d5000 tv half screen turning white - Forums - CNET

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Feb 03, 2016 | Televison & Video

1 Answer

Vizio 55" Inconsistant Dark Screen


you have to open the back cover to check weather the screen back light need replacement. usually if the lamp is almost black in color it needs replacement. the backlight is covered with metal shield installed at the upper portion and lower portion of the panel of the tv.

Nov 01, 2012 | Vizio VF Televison & Video

1 Answer

I have a Mitsubishi 60"


there may be dust behind the screen & also on the reflecting glass. u will see that upper back portion cover is removable. remove it & see that glass there is glass on inner side of cover. clean it, also clean the screen. u will see there are 3 picture tubes faces on bottom side, clean all of them.

if it does not work then u can increase brightness of tv by increasing "screen" control of tv which is on the lower back portion of tv. this can be done by any tv repair expert only.

Sep 05, 2011 | Philips Magnavox 51MP392H Rear Projection...

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Funny colores and shades on my Toshiba projection TV


the convergence tube is the faulty part in this case a new convergence tubes replacing is required.

Jan 30, 2009 | Toshiba 42H81 42" Rear Projection...

1 Answer

Brightness on my tv quit workin


open your tv.At the back you see a plyback,it is big parts of tv with a wire attached to the picture tube,that is plyback At the buttom you wiil see a two knob, the lower knob is for the screen and the upper knob is for the focus.Adjust the lower knob or screen .

Nov 16, 2008 | Toshiba 36A42 36" TV

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