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My 42in lcd legend TV has blue light but seen is black

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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. http://electro-medical.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Posted on Dec 23, 2016

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Posted on Jan 02, 2017

tvtek
  • 1284 Answers

SOURCE: LG 42in LCD Television - turning unit off

The amount of standyby power consumtion is minimal. The only way to turn it off completly is to disconnect the power from the TV. This will however increase your start up time when you want to use the TV.

Posted on Nov 30, 2007

  • 267 Answers

SOURCE: I have a philips 42in

IT IS TELLING YOU YOUR VGA INPUT SET UP IS INCOMPATIBLE. IS THIS A COMPUTER YOUR HOOKING UP?
IF NOT USE YOUR HDMI INPUT OR COMPONENT INPUTS.

Posted on Feb 06, 2009

jrweighing
  • 183 Answers

SOURCE: why does it take 10 minutes for my LCD Legend tv

Sounds like you have a faulty capacitor on your invertor..Gently press on the screen when there is no picture.is there light on the screen? If so, there is backlight but no video..hence a mainboard or power supply problem..If there is no backlight then the problem is the invertors or the power supply not supplying 24volts. The invertor is located on left or right hand side of screen..Check that all connections are secured and not loose.Check that the power supply capacitor tops on the power supply do not have bulging tops..If not, and voltage is reaching the invertor, then remove the invertor and check for bad solder joints and leaking capacitors.

Posted on Oct 17, 2009

  • 96 Answers

SOURCE: My 42in Vizio LCD has sound but no picture.

Make sure in the back of the TV the "picture cords" or A/V cables are properly fitted.... Hope this helps :)

Posted on Jan 08, 2011

  • 2246 Answers

SOURCE: I have a polaroid 15.4" LCD TV. The blue light

i think this can repaired, change the lcd tv screen it will work, your lcd was broken at all

Posted on Jan 22, 2011

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1 Answer

42in lcd legend light turns on but the TV screen is black


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/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Dec 23, 2016 | Televison & Video

1 Answer

Hatachi 42in tv L42vco4u blue light flashing


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience. If blinks continue without any pause, the main board is faulty.

Oct 17, 2015 | Televison & Video

1 Answer

LG 42in Class 1080p 120Hz LCD HDTV red light stays


Hi
Your tv set is stuck in the standby mode as a components went shortcircuit in one of the power supply rails and should be serviced by qualified personnel.

Sully

Sep 29, 2013 | LG 42LC2D 42 in. LCD HDTV

1 Answer

LG LCD 1080p 42in tv and the screen just went out. The blue light is on but no pic and sound.


Looks like a case of electronic problem. Try switching on-off with your remote and try manually again. If not, just call the LG Customer care and report the problem. This appears to be a fault on the electronic circuit.

Mar 06, 2011 | LG 42LC2D 42 in. LCD HDTV

1 Answer

I have a vizio 42in. lcd tv and the screen is black when tv is on but hear the what ever program is on.Can it be fixed?


Firstly check for loose connections between the video source and tv e.g dvd player/set top box

If still no picture it could be that the lcd panel inside the tv has a faulty connection for this you will need a technician to come out and make the repair this sounds more expensive than it usually is and is not a major cause for alarm.

Hope you have some success.

Feb 28, 2011 | Vizio 42 in. LCD TV

1 Answer

I have a polaroid 15.4" LCD TV. The blue light


i think this can repaired, change the lcd tv screen it will work, your lcd was broken at all

Jan 22, 2011 | Polaroid TDA-03211C 32 in. LCD HDTV

1 Answer

My 42in Vizio LCD has sound but no picture. Screen starts blue when it turns on then goes to black with only sound.


Make sure in the back of the TV the "picture cords" or A/V cables are properly fitted.... Hope this helps :)

Jan 08, 2011 | Vizio 42 in. LCD TV

1 Answer

Lcd projection tv 42in


Lamp is available HERE and cost approx 175

Jan 13, 2009 | Televison & Video

1 Answer

LG 42in LCD Television - turning unit off


The amount of standyby power consumtion is minimal. The only way to turn it off completly is to disconnect the power from the TV. This will however increase your start up time when you want to use the TV.

Nov 28, 2007 | LG 42LC2D 42 in. LCD HDTV

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