Question about Televison & Video

Open Question

LCD TV color flashing to black & white

Sharp LC-20AV7U: After only a month of use, this new LCD TV started flashing from a full color picture to black & white and back to color, every second. When we left it on, it would gradually flash more slowly and then the picture would become all color after about 20 minutes, then stay in color. But that does not work anymore. Now it won't stop flashing no matter what we try. Any ideas? Thanks!!

Posted by on

  • bwaybrad Nov 13, 2007

    more details - it flashes with DVD or game console connected also, and I checked to make sure it is not the digital cable. makes no sounds or clicking.

  • Anonymous Dec 15, 2008

    We have only had our TV for a few days but yesterday when watching football all day long the picture would pop to black and white for just a few seconds then go back to color. This only happened 4 times the entire day, but still it is a new TV, I was hoping it was some kind of satellite feed problem. It happened on different channels so I just don't know.

×

Ad

6 Suggested Answers

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
  • 1 Answer

SOURCE: TV No Picture

My 32D40U would turn on for 5-10 seconds (Please Wait would appear) and the screen would go black. Sound Normal. It would also sometimes do this after running 5-10 minutes. I read somewhere that the inverter board would come loose and lose proper ground. I took the set apart, removed the board, and cleaned up the grounding points. I reassembled using some copper paste on the ground points and LockTite on the screws. I used some contact cleaner on all the connectors going to the board. I noticed two cables that are covered with copper shield tape where too tight at their connectors and repositioned the tape to give them some slack. The problem hasn't occurred since the fix.

Posted on Mar 22, 2008

Ad
melnavz
  • 1226 Answers

SOURCE: 20" Sharp TV LC 20-SH 6 U

Mybe u can do repair by yourself or in the service center of your TV. Maybe this can less cost than you buy a new one.

I suggest examine the circuit board of the TV because maybe there some loss connection that needed to be resoldered.
If afraid to do , then let the repairman do it for you, or in the service center of the TV.

Posted on Feb 06, 2008

SOURCE: Sharp LCD LC-46D64U

Try resetting the TV. Here's how to do it - Unplug the TV's power cable. Keep the Channel Down and Volume Up buttons on the TV pressed and plug the power cable back into the outlet. You will hear a click when you plug it back in if the reset is successful. Hopefully this should restore your video and audio.

Posted on Feb 06, 2008

ginko
  • 19396 Answers

SOURCE: LC-37AF3X Sharp Aquos KCD TV

If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

Posted on May 05, 2009

dsacco86
  • 1077 Answers

SOURCE: Sharp LC-26D43U Power light flashes and unit won't turn on?

It's a power supply related problem. When it turns itself off, this it called protection mode. The TV automatically turns off to protect other parts form being damaged.
The most common problem is the Power Supply Unit or the Backlight Inverter Board.
You may have to take the TV to a repair shop to find out which one is bad. Paying a repair shop to replace the board for you maybe more than the TV is worth. If you let them diagnose it and you replace the bad circuit board yourself, it would be cheaper.

Here's a place I use to get parts for TVs:
http://www.shopjimmy.com/catalogsearch/result/index/?q=LC-26D43U&p=1
The problem is the repair shop may charge you double or three times of what the part costs at the web site link above. Then, plus labor. I just want to save you money. :)

Posted on Jun 03, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Power light comes on along with OCP light. No screen or sound. internal switching noises coming from inside the tv


Sharp TV - Flashing OPC & Power Lights - YouTube

? 0:50
https://www.youtube.com/watch?v=BH1OcQ6dIEE
Jul 1, 2011 - Uploaded by Tweetssun
Sharp Aquos TV flashing a OPC & Power Lights in a pattern of 3 flashes, ... Sharp Aquos LC-32D44 - One blink lamp error - Nopicture or sound - Diagnosis ... Repairing Flat Screen TV - Blacked out with blinking red light ...Missing: 32dv22u

Sharp lcd tv power button flashing - HDTV - Streaming Video & TVs ...

www.tomsguide.com/forum/54708-4-sharp-power-button-flashing

Feb 8, 2012 - 7 posts - ‎3 authors
We have owned a Sharp 32" LCD TV for about two years. ... However a quick Bing search shows that the blinking green light usually means a bad power board, which seems ... No picture, no sound, just a black screen and two blinking green ... a cable surge block on the coax where it comes into the house. Sharp lcd tv power button flashing - Digital TV
19 posts
Oct 14, 2012
Sharp hd tv blinking power no picture - Digital TV
2 posts
Jan 7, 2012
More results from www.tomsguide.com
Missing: 32dv22u

Sharp Aquos LC 42DH77: Inverter, Backlight, Power and ...

www.normsweb.com/tektips/42dh77.shtml

Jan 31, 2016 | Sharp LC-32DV22U Widescreen 32-Inch Class...

1 Answer

My new Sharp LCD turn black when doing HDTV


try go to menu programmed by using a remote control ,and find the picture setting ,like a ntsc.pal,secam,nicam, try choose them it will fit the color.

Jan 11, 2009 | Sharp LC-42D64U 42 in. LCD HDTV

1 Answer

No picture -- white screen -- no sound


With no video and the the colored stripes, it sounds like the LVDS cable needs to be reconnected to the LCD control board or the control board itself is bad. If the unit is only 3-4 months old, it should be covered by warranty

Nov 18, 2008 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV

1 Answer

** picture - solid green power light - relay clicks


yes,the set has a main video processor board bad.Sharp is well aware of this problem,and with persistence sharp will give in.

Mar 10, 2008 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

3 Answers

Line accross top of the screen with flashing black and white boxes


Thin white dashes on top of screen is PERFECTLY NORMAL. It is nothing wrong with the TV, it is the broadcast. What you are seeing is the very bottom of the timecode running. It doesn't happen all of the time or all channels. It usually happens with old 4:3 commercials predating "Digital TV." This is mentioned in your Users Manual. You should be able to adjust the horizontal/vertical position in the menu settings.

Jan 02, 2008 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

I have no color on my 37 aquos sharp lcd


Give more info. In tuner mode, in component,rca or s-video input?

Dec 07, 2007 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV

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

Related Topics:

472 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75178 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Cindy Wells

Level 3 Expert

5346 Answers

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

Answer questions

Manuals & User Guides

Loading...