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LC-46LE820X TELEVISION SCREEN GOES BLANK AND THEN COMES BACK ON LIKE THE POWER SUPPLY HAS BEEN DISRUPTED

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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

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Posted on Jan 02, 2017

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zjut
  • 106 Answers

SOURCE: viewsonic n3246w Screen goes blank

It's the LCD panel assy failure. Most likely the high voltage Inverter board failed.

Posted on Feb 01, 2008

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  • 1 Answer

SOURCE: LCD Turns off or screen goes blue

I had the same problem with mine. I replaced the power supply and the problem was solved. That was about two months ago. Now I have the problem with a very brief blue screen, then going black with the sound still working. From what I have been able to find out it appears now that I have a bad power inverter. I will be replacing that next.

Does anyone have a problem with the screen looking cloudy? When my TV was working, I could see areas that looked like faint black clouds across the screen.

Posted on Jul 07, 2008

satavlad
  • 405 Answers

SOURCE: Monitor comes on for a few seconds then goes blank.

Your looking at profesional repair. It could be DC/DC convertor, Monitor unit or PC/IF unit. (last two are expensive)

Posted on Oct 25, 2009

  • 5 Answers

SOURCE: the screen goes blank (black) after a few seconds.

I have one that does the exact same thing. I tested the power board and there's no voltage coming out of the 12V pins. Defective power board for sure, but good luck finding a replacement, and if so, pray it doesnt happen to that one, as it seems to be a common issue with this model. I'm doing more research as to what is failing on the board so i might perform the repair myself.

Posted on Mar 19, 2010

SOURCE: sharpaquos 32' TV model LC-32D44U WILL NOT STAY

This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an, Approved Service Center, Sharp in your case, Now, this last point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have parts on hand, also sometimes, there has been a service bulletin in issued and the repair may be subsided or even free.
static.compusa.com/.../Sharp-LC-32D44U-LCD-HDTV-Manual.pdf - United States
Above is your user manual, and below is your service and repair manual should you wish to DIY, not really recommended, however I have included it for your convenience.

http://elektrotanya.com/sharp_lc32d44u.pdf/download.html

Posted on Aug 25, 2010

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1 Answer

My tv will turn on. and i can see a picture then the screen goes blank. i can still hear the audio. but the screen is blank


Such problem is caused by a loosened terminal in the power supply board. Open the back cover of the television and locate the power supply panel. Check the PCB for loosened terminal and have it soldered by a soldering iron.

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My television will not come on. The blue light comes on indicating that I pressed the power button to turn it on and then after several minutes of a blank screen it turns itself off and goes back to the...


Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
  • No video, Power light is on or blinking.
  • TV is making a clicking noise.
  • TV takes a while to come on
  • Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



ecollier2012.jpg
Capacitor being replaced! Fairly easy DIY fix.

ecollier2012_0.jpg
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

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1 Answer

Hi green light comes on flickers then goes off


More than likely a power supply issue, Take the back of and check for swollen capacitors in the power supply, If any found then replace them with the same value ones and try again.
If it is related to capacitors this will solve your problem.

Mar 05, 2010 | Sharp Aquos LC-32G4U 32 in. HD-Ready LCD...

1 Answer

Television goes blank without warning for undetermined time


Power supply board have problems.Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Mar 02, 2010 | LG 32LC2D Television

1 Answer

Screen goes blank after 3 seconds


There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Oct 24, 2009 | Sharp Aquos LC-32GD4U 32 in. LCD HDTV

1 Answer

Screen goes blank, sound still on


even though lamp came back on and worked for awhile, it was a bad lamp. replaced lamp and set works

Mar 23, 2009 | Samsung HL-R5087W 50" HDTV-Ready...

1 Answer

Monitor comes on for a few seconds then goes blank.


Your looking at profesional repair. It could be DC/DC convertor, Monitor unit or PC/IF unit. (last two are expensive)

Jan 22, 2009 | Sharp LC-M3700P 37 in. HDTV-Ready LCD...

1 Answer

Sharp aquos display comes on for a few seconds then blank screen


I have the same problem with my 37" HP which is the same as Sharp Aquos, it's bad backlight inverter boards, the screen comes on for a second then nothing, no menu, no channel change indicator then turn it off and you hear the clicking of the power supply about 10 seconds after.

Jan 01, 2009 | Sharp Aquos LC-32G4U 32 in. HD-Ready LCD...

1 Answer

Thomson 27" LCD TV 27LCDB03B


cannot be presise but at worse the lcd back light is failing or the supply to it . this is a job for a service engineer

Dec 02, 2007 | Thomson LCDB 03B 27 in. Television

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