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What causes the tv not come on? - Televison & Video

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Alway check the power source first.Most common problems are for the LCD and Plasma tvs.Tvs power supply boards have dead parts on them,than not giving the right voltage to the tv anymore.The LED power light indication on the tv front panel flashes LED light or no light at all.Sometime might work for a fix or a TEM.fix buy unplug,replug the tvs back about an hour later.

Posted on Sep 26, 2010

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I HAVE 46 INCH SAMSUNG TV THAT WONT COME ON BUT IT BLINKS THREE LIGHTS

Posted on Apr 21, 2012

  • Amber Johnson
    Amber Johnson Apr 21, 2012

    IT IS LIKE IT HAS A SECTRY LOCK ON

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Posted on Jan 02, 2017

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Tv has a pink/magenta shimmering when the tv screen has a light coloured backgroung


Shimmering can be caused by a number of things.

The first that springs to mind is electromagnetic interference. Speakers, amplifiers, florescent lights in close proximity can cause this. I even saw a TV that had been fixed to a wall adjoining the next door neighbours who had put his TV in exactly the same position and the interference passed through the wall.
Try moving the TV location away from all sources of interference (including Cable boxes, Video recorders, etc.) Does the problem change or go away?
Is the TV grounded properly? Interference needs to be siphoned off to a ground. if you put your hand around the cable that feeds the TV a video signal does the problem change or reduce?

Another issue may be some form of video post-processing going on causing the shimmering. Some forms of image smoothing software built into the TV can cause this. So try shutting down any features on the TV, does the problem go away?

On a big TV that is fed a low resolution video stream you will always see what the industry calls "artefacts". These are distortions caused by the transport compression of the video signal. there is no way around these except for receiving a better resolution picture stream.

Mar 13, 2015 | Panasonic TCP42C1 Plasma TV

2 Answers

14 month old samsung 32in 530 series lcd tv will turn on fine, then after a few minutes start turning on and off repeatedly for ever...until i pull the power. What do i do, call samsung?


its possibly dry joints on the power supply-the heat generated causes the solder to crack,and when warm creates a "crater" on the affected joint and expands with heat,and loses contact until cool.(retraction).should be easy if you are handy with a soldering iron!.failing that,take it to a repair shop as its out of warranty,and samsung will not want to know! (unless you got extended warranty,of course!)
good luck,steve

Sep 12, 2011 | Samsung LN32C530 32 in. TV

1 Answer

Loud humming or buzzing noise have picture but flashes all different colors resets and goes off after awhile good pic after that


The tv problems and causes are 100% is the tv colors wheel it is causes and the tv problems.The tv are having humming or loud buzzing noises sounds are the causes of the tv colors wheel going off and out control of it motor mount and spinning in at high RPM speed and different colors showing up or flahes of black and white color in the tv back ground.The tv colors wheel must have to be replace.Best hire a tv tech to do the replacement of the tv colors wheel,because have to take out many mechanicals parts before can even come to the tv colors wheel is self to replace it.

Aug 19, 2011 | Samsung HLP5067W Television

1 Answer

I got a 52" zenith


No,the tv message said replace lamp wright?Yes,mean the tv projection lamp is the causes and the problems.The tv projection lamp life span have ended that why the tv it is not holding a stable tv projection lamp picture.All throught these causes,does the tv make alot of clicking noises too,when the tv projection lamp is it on for 30 sec.and shut it self off?Yes,than the board that call the Ballast board it is also dead too.This Ballast board only job are to ignite the tv projection lamp only.Tries websites like Partstore.com,Ebay.com to buy a new tv projection lamp and a new Ballast board too for the replament too,if this tv causes have alot of clicking noises,when the tv is trying to ignite the tv projection lamp.

Aug 09, 2011 | Zenith D52WLCD 52" Rear Projection...

1 Answer

My TV will flicker at times and go completly black for a period. I unplugged everything and let it sit for about 12 hours and the TV worked fine the next day. The following day the TV again flickered and...


The screen flicker than go blank,does it still have power to the tv set?Yes,than this cause only can be causes by only 2 boards in the tv can causes this problems,if tv power still stable for the set.The T-CON board it shorting out and dying for this problems to happen or worst case causes the Main board tv Tuner signal board it dying.The T-CON board the priced it is cheaper and could cause this problems too.Tries change this T-CON board first,see what happen.This board T-CON board sit at the bottom in the middle of the LCD screen panel to decodes pictures pixel before it go onto the LCD screen panel.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-CON board for the replacement.

Jul 27, 2011 | Samsung LN-T4071F 40 in. LCD HDTV

1 Answer

I have a large spot on the right side of the LCD screen, it looks like a large water spot does it mean the VIZIO TV is going out? What can I do to make it disappear.


Not possible.Tv have damages to it LCD screen panel by an object or a person have causes by forced or putting pressure to the tv LCD screen panel itself to causing colors picture pixels and it radiation to died to causing this problems.Sorry it time to buy a new tv,because by replacing the tv LCD screen panel itself will cost u the same as a new tv.Tries buy a new tv from the VIZIO tv corporation directly return the damages LCD panel tv to them,u could get a 5 or 10% off of the tv prices.

Jun 05, 2011 | Vizio VU42L 42 in. LCD TV

1 Answer

I can get a picture , but no sound on the TV . What am I doing wrong?


Many RCA TV sound problems are caused by SAP function being activated by TV station equipment that converts Analog TV signals to HD signals. Accidental pressing of the wrong buttons on your remote can also cause this problem.

The incorrect conversions causes the Audio settings to be changed from Stereo to SAP by the received signal.

Solution is to go to Audio set-up in customer menu and change settings from SAP to Stereo. If you find that settings are wrong, change them to "Stereo". Do channel scan if you are using the TV tuner/remote to select channels. Turn off the TV and unplug for 60 seconds. Check the settings again and reset if required.

This problem may re-occur when you select the VHF channel, satellite channel or cable box channel that is causing the problem. It is not a TV fault that can be repaired. The problem is caused by the incorrect incoming signal.

SAP is Second Audio Program, used for second language transmissions.

Second cause may be that the speakers have been turned off in the audio set-up menu.

easyab

Apr 22, 2010 | RCA HD52W59 HDTV Projection Television

1 Answer

TV turns on and off without pressing any button


This could be a simple issue with the dome switches on the tv. Many times they will become faulty and can cause strange things like this, one common cause of the switches going bad is incorrectly cleaning a tv by spraying cleaner directly onto the screen and allowing the solution to drip down the screen, capillary action will take a few drops of the solution an deposit it on the switch board behind the switches, causing the tv to malfunction. Even though the power is turning on and off does not mean that the power switch is the one causing this. Without getting technical the design of the switch array can make any faulty button work another function. For example a faulty volume up switch can turn the tv on or off. All of the switches need replaced.

Oct 10, 2009 | RCA 36V430T 36" TV

1 Answer

No Picture, No Sound While Watching


Resetting the TV
If the buttons on the remote AND the buttons on the TV case do not work (channels do not change and you cannot open or navigate the menu), the TV has stopped responding. Reset the TV as follows:

NOTE:
Some TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time.
1. Unplug the TV power cord from the power outlet.
2. Unplug any connected devices (DVD, Set-top boxes, etc...)
3. Press and hold the TV power button for five seconds.
4. Plug the TV power cord back into the power outlet and turn on the TV.
5. Open the on-screen menu to confirm that the TV is responding again.
6. Turn off the TV and reconnect the devices.
7. Turn on the TV.



LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.


Hope it may help you;

Regards;
VOTIT

Jan 29, 2009 | RCA L37WD250 37 in. LCD HDTV

2 Answers

Sony tv model kv-27HFR


hi can you send me a tv diagram for sony tv model kv-27HFR cause there are components missing and...

Feb 26, 2008 | Sony Televison & Video

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