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Hi there my TV went blank eMerton model LF391EM4

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.
Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Posted on Apr 19, 2015

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Many LED TVs and other electronics have bad capacitors on their power supply boards. You can visually inspect them by opening the TV and looking for capacitors with bulging tops. If you see any, replace them all in the power board section. Check to see if your TV is still under warranty first though.

Posted on Dec 03, 2014

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SOURCE: Hi there my TV went blank emerson model LF391EM4

If audio is OK, the fault is with its back-light inverter section circuit. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/

Posted on Nov 13, 2014

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1 Answer

Hi there my TV went blank emerson model LF391EM4


If audio is OK, the fault is with its back-light inverter section circuit. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/

Nov 12, 2014 | Televison & Video

1 Answer

Why would we have to re program our tv channels?


If you turn the TV off by any other means than using the TV's power button you will lose the saved channels.
I think that this only applies to the first turn off after the channel scan.
In notes at right.
Emerson LC195EM87 Owner Manual Auto Channel Scan Language Selection

Oct 14, 2014 | Emerson Televison & Video

1 Answer

Almost every night we have to re program the channels into the tv..why is this happening and what can we do about it?


You will need to replace the battery on the input board,similar to the bios battery in a computer

Len

Oct 14, 2014 | Emerson Televison & Video

1 Answer

Emerson 40 Inch LED Flat Panel Screen Model Number LF391EM4 A Trying to utilize other media products to watch home movies & photos through USB Port on the televation screen. have no manual when bought...


First locate a manual on the Emerson site and download.
You need to change to 'input' to the TV by selecting the 'source' on the AV button.

Download from here
http://www.emersonaudiovideo.com/support/download.php

May 22, 2014 | Televison & Video

1 Answer

My tv screen went black


Hi,
If you have problem with video only then the back light inverter board of your tv is faulty. You didn't mentioned any thing else. Is there is sound or not. If sound is ok then the back light inverter is faulty. There is no repair possible with the back light inverter board. You have to replace the bosrd with a new one. As you didn't mentioned the model number of your tv, it is not possible to sent you any deatiles like where you will get the inverter board and its cost. Try to add full discription of the complaint and the model number of the TV.

Anyway check the link bellow to see how the back light inverter board looks like.

Inverter

Ajin

Mar 31, 2012 | Haier Televison & Video

1 Answer

The TV made a pop sound, then the video went blank. Audio works


i think the power supply went bad. this needs a lg repairman i would notr try to repair your self,lots of hi-voltage going on there

Jul 09, 2009 | LG 42PG20 42 in. Plasma HDTV

1 Answer

Hslc8129hdi


Call Hisense for a firmware upgrade. Screen on our Hisense suddenly went blank last weekend too and aparently there was a broadcast that had upset a lot of models. Hisense Support will send you out a USB stick with a firmware upgrade

Oct 25, 2008 | Hisense TL1700 17 in. LCD Television

1 Answer

Tv wont come on


Hi sunny212
1) your tv have it problem in the power regulator you need check
the voltage
should will be 130v no more

2)also check the b+ voltage 180v in the seccion color output
may be is aussent voltage
or open resistor near to flyback transformer

Nov 25, 2007 | Sanyo DS20930 20" TV

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