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Sanyo FVD5833 58" LCD TV has backlighting flashing off and on but image is OK. Pulsing at about 3-4 times per second.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

zjut
  • 106 Answers

SOURCE: lcd tv backlight prob

You need to replace the inverter board if you can find the spare part. Otherwise you need to replace the whole lcd panel.

Posted on Jan 01, 2008

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

  • 453 Answers

SOURCE: Sony Bravia 46S2010 LCD backlight ok , no video

yes it is

Posted on Jun 18, 2009

  • 1 Answer

SOURCE: samsung lcd tv no picture just sound

While this is not a permanent solution, we've fond it helps... We have a Samsung LCD that does not turn on when there is too much humidity in the room. This only happens in the summer when it gets really humid. We moved our dehumidifier next to it, let it run for around 15 minutes and the TV turned on again, no problem. Lately, it's been raining alot so it's very humid. We've gotten into the habit of leaving our dehumidifier on through the night on low and we've had not issues turning on the tv since then. This is a hastle but it's either that or buying a new tv.

Posted on Jul 25, 2009

  • 8457 Answers

SOURCE: Sanyo lcd tv blinking

Power supply board is dead.Replaced the power supply board will solved this problems.Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Posted on Apr 02, 2010

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1 Answer

How do I fix my TV that will give an image after powering on, and then make it go so dark you can't see it?


This is what happens when the backlighting circuit fails. It can either be the lamp or the inverter board. This is one reason the newer TVs/Monitors are using LED backlighting. They last longer. Typical LCD backlighting can fail in as little as three years if they are left on full time.

Apr 14, 2015 | Sanyo DP42848 LCD TV

1 Answer

Tv started screeching then screen went black volume and channels ok


Sounds like this:
http://www.coppelltvrepair.com/p/428/sanyo-dp42848-p42848-00-backlight-inverters-replacement-for-dark-screen-no-image-problem

Of course your TV model may be different and the inverters may be different...but the description points to the same problem.

Aug 15, 2013 | Sanyo 42 in. LCD TV

1 Answer

My new 55in sanyo lcd tv has sound but no picture. The tv is one week old. Is the problem the backlight or something else?


Tv only a week old take it back were u bought it,trade it in for another tv.Tv have a picture than flashes only a few sec. than died have sound left only?Yes,than those tv 2 long LCD inverter boards are dead.These tv 2 long LCD inverter boards are only to help the tv to have a backlight for tv LCD screen panel only to produced pictures.

Jul 14, 2011 | Sanyo DP46849 46 in. HDTV

1 Answer

Sanyo lcd tv 20"has sound but no picture


0ne of 3 has failed:
(in order of probability):

1. Backlight inverter
2. Power Supply
3. Backlight

Please seek the expertise of an experienced TV repair technician - as they contain potentially lethal voltages that must be properly discharged before work can begin.

Thanks! ! ! !

Apr 20, 2011 | Sanyo CLT2054 20 in. EDTV-Ready LCD...

1 Answer

37' lcd sanyo. sound no picture. no backlight. when turned on screen will flash on for a second, power indicator light stays on . Hear electric static sound when screen flashes


Check the lamps connectors on the backlight inverter board make sure they are not loose. You may be ahving failing inverter board itself.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

Jul 22, 2010 | Sanyo DP37647 37 in. LCD TV

1 Answer

What is subfield ? panasonic says subfiels what is subfield ?


Does this help
A standard video signal is actually a series of still images, flashed on screen so quickly that we believe we are watching a moving image. The typical frame rate used in North America is 60 frames per second (60Hz) meaning that a TV would display 60 individual still images every second. Sub-field drive is the method used to flash the individual image elements (dots) on a plasma panel. For each frame displayed on the TV the Sub-field drive flashes the dots 8 times or more, meaning that the dots are flashing 480 times per second (480Hz) or more. (Example: 60 frames per second x 8 sub-fields = 480 flashes per second). subfielddrive_en.jpg

Jul 10, 2009 | Panasonic Televison & Video

1 Answer

Tv wont turn on


Hello,

I have a pile of these in my shop. Unfortunately and usually, a backlight lamp is bad, and the inverter board is damaged when it goes out. The backlight lamps are sealed inside the panel, so the usual method of repair is to replace the panel.
If you turn the lights off in the room, then turn the tv on, you will probably see a momentary flash of light from the backlight trying to start up. The lamps can be replaced, but the option is not really cost effective given the amount of time it takes to replace them/very delicate nature of the lamps/availability of the lamps/cost of the lamps. Replacement panels might be available, but you'd have to use a TV shop for reference or call Sanyo directly.
These units also have a history of power supply heat damage, so if you don't see the momentary flash, it could be the power supply. But the momentary flash is the dead giveaway.

I hope this helps you...

Dec 30, 2008 | Sanyo DP32746 32 in. LCD Television

1 Answer

Sanyo DP32746 screen black no sound screen flashes when turned on


Hello, I just posted this to another user's question, and you might find it useful, too.

I have a pile of these in my shop. Unfortunately and usually, a backlight lamp is bad, and the inverter board is damaged when it goes out. The backlight lamps are sealed inside the panel, so the usual method of repair is to replace the panel.
If you turn the lights off in the room, then turn the tv on, you will probably see a momentary flash of light from the backlight trying to start up. The lamps can be replaced, but the option is not really cost effective given the amount of time it takes to replace them/very delicate nature of the lamps/availability of the lamps/cost of the lamps. Replacement panels might be available, but you'd have to use a TV shop for reference or call Sanyo directly.
These units also have a history of power supply heat damage, so if you don't see the momentary flash, it could be the power supply. But the momentary flash is the dead giveaway.

I hope this helps you...

Dec 10, 2008 | Sanyo DP32746 32 in. LCD Television

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