Question about Sharp LC37SH20U 37 in. LCD Television

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My sharp lcd tv has red & blue pixels accross the bottom of the screen . then a week late 7 to 10 rows of pixels appeared about 1' above the other ones.

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  • Sharp Master
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Ur main video backlight board is dead,must be replaced.

Posted on Oct 20, 2009

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I have several white spots appearing like snow on my Sharp 70" screen. How can I correct? Is there a pixel problem with my TV? I have only had TV for over 2 years.


If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/. Faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Jan 01, 2017 | Sharp Televison & Video

1 Answer

What does it mean by dead cells?


I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.

Sep 20, 2010 | Hanns.G Corporation HW191D 19" LCD Monitor

1 Answer

Have two intermintent thin blue lines running top to bottom on screen.


Screen appears to be going bad on a a couple of pixel lines. Nothing you can do. Warranty?

Apr 21, 2010 | Sharp LC-26D40U 26 in. LCD HDTV

2 Answers

Vertical red line through screen


This is a problem within the screen, probably the connection from the internal ribbon connector to the display. Unfortunatly the only way to repair this is to have the screen replaced.

Dec 26, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Red and Blue vertical lines top to bottom on LCD Screen


yes it looks like its going bad..must be pixel burnout or something..you will have to contact HP for repair/replacement

Nov 23, 2008 | HP Compaq nc8000 Notebook

1 Answer

Lines on tv screen


Both sound like bad LCD panels. The following must be answered to confirm this:
Do the lines appear on all inputs/all signal sources?
Can they be seen in the OSD/menu?
If yes to both questions, it is likely that the LCD panel is bad

Jul 19, 2008 | Sony BRAVIA KDL-32S2000 32 in. LCD HDTV

3 Answers

Sharp aquos lines threw the picture


I've seen this problem before and if caught early (usually only a few pixels), its fixable. But if it has already started forming a "line" it might be too late and you might have a defective LCD panel. Most of the time, doing the factory initialization helps with this problem.

(WARNING: THIS GIVES YOU ACCESS TO THE SERVICE MENU. DO NOT ADJUST ANYTHING IN THE SERVICE MENU OTHER THAN WHAT I PROVIDE YOU IN THESE INSTRUCTIONS. IF YOU DECIDED TO ADJUST ANYTHING OTHER THAN WHAT I PROVIDE YOU IN THESE INSTRUCTIONS, I WILL NOT BE RESPONSIBLE IF ANYTHING WRONG HAPPENS TO YOUR TV.)

  1. unplug tv
  2. press and hold at the same time “Vol –“ and “input” button on the TV set.
  3. while holding those buttons, plug the tv back in
  4. the tv should turn on by itself, keep holding the buttons until the letter “K” appears. Then let go
  5. then at the same time press “Vol –“ and “Ch. Down”, you should see the service menu appear (if it does not appear, try pressing the two buttons again, it needs to be exactly at the same time)
  6. Then use the “Ch. Down” button to navigate down the service menu until you see “Industry Init” (NOT Industry Init +cause)
  7. Then press “Vol +” to toggle it to “ON”
  8. Then “/////////////////” should appear.
  9. when the screen turns GREEN, unplug the TV. Wait about 30 seconds, then plug the TV back in.
  10. Then continue on with the initial setup again.

Mar 27, 2008 | Sharp Aquos LC-46D62U 46 in. LCD HDTV

1 Answer

Vertical line


Sorry, you have a defective LCD panel. If your TV is still under warranty, contact Sharp to get the TV exchanged. Otherwise, LCD panels cost more than the TV is worth.

Mar 25, 2008 | Sharp Aquos LC-46D62U 46 in. LCD HDTV

3 Answers

Green line


sharp is very aware of the panel and main video processor problems.They should give you no problems on the repair.It sounds most likely you have a main video processor problem.

Mar 13, 2008 | Televison & Video

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