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The tv turned off and will not come back on. There is no standby light. When i unplug the cable connecting the power board from the main board lights come on. When plugged back in the lights go off.

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  • Michael shaw May 17, 2017

    I ordered a power supply board and that did not fix the issue. I put old board back in and it works the same as the new one did

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  • 7 Answers

Check the power that supply the standby voltage 5V if it's stable, if not check and replace power board

Posted on May 16, 2017

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: Planar PDP42BK Plasma TV

It is the power supply. Replace the C97, C19, and C16 Capacitors with 2.2 uF ones.

Posted on Oct 03, 2007

  • 52 Answers

SOURCE: TV does not turn on/red led flashes 7 times in front

this is common issue with this model and through your troubleshooting is tied to y main board. blinking led on logic main in normal operation. when replacing y main always good idea to replace y upper and lowe buffer boards as they complete a circuit and sometimes replacing one without other could cause additional failure on remaining boards

Posted on Aug 19, 2008

  • 9 Answers

SOURCE: INSIGNIA LCD won't turn on

replace 2 condensers in the power supply with greater voltage ones.original are 1000uf 35volt...use 1000uf 65volt...99cents each
power circuit is made to fail with typical tv industry tactics...the warranty is reflected by the life of their condensors (capacitors) average life is 2000 hours..
easy...huh
if your a smoker...you must clean the button cover as they get stuck on with your stupid tobacco residue. 75% of all LCD tv's that smokers own fail this way...
\tough huh?
TRY TO STOP SMOKING...

Posted on May 18, 2009

saidneurot
  • 128 Answers

SOURCE: element stuck in standby and wont turn back on.

you can unplug the power cord and drench the power and after go ahead and plug in back the TV and try to start it

Posted on Jul 30, 2010

  • 33 Answers

SOURCE: I have a Hitachi P50H401 plasma TV ,when you hit

unplug the unit for a while like one hour or so.

Posted on Sep 03, 2010

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1 Answer

Vizeo e421 will not turn on has standby 5.2 v main board does not turn on power supply. have replaced main board


First make sure the power cable is securing plugged in. If so, try unplugging the TV, wait about 30 seconds and then plug it back in, and try turning it on again.

May 19, 2016 | Televison & Video

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Vizio vw37l hdtv20a standby light on but wont turn on


you either have a faulty power supply or faulty main board. Vizio power supplies on the older sets are pretty decent. It's usually the main boards that go. These older main boards tend to be pricey so it may be better to buy a new set.

Mar 27, 2013 | Vizio VW37L 37 in. LCD HDTV

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LG55LH40 LCD TV wont come on


The set will need to be properly diagnosed. It could be a defective main board or power supply.

Sep 01, 2012 | Televison & Video

1 Answer

I have a KDL52s5100 it is not working(no lights, dose not t turn on) due to a thunderstorm. I have bought 2 powersupply board and a new main board and still nothing turns on no even a light.. please help....


make sure that all the voltages in the power supply output are present before connecting to the control motherboard. also confirm that the cables supplying the voltages to the motherboard are all matching e.g do not make a mistake to connect the 3.3v cable to the 12v terninal. just be cautios and your system will power up

Sep 21, 2011 | Sony BRAVIA KDL-V40XBR1 40 in. LCD HDTV

1 Answer

I have a 2000 Sony KP-53HS10 color rear video projector, Just yesterday it turned off in the middle of watching it and the timer/standby light merely blinks. When I unplug it and replug it in, the same...


Good day!!!


That problem is usually have 2 causes..Its either power supply board or mainboard..

Please take this steps on how to determine the problem:
  1. Open the back cover.
  2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
  3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
  4. If the power supply output is normal..The problem could be on the main board...
  5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
  6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..
Hope thissolution will be helpful..

Thanks for using fixya...

Jul 05, 2011 | Sony KP-53HS10 TV

2 Answers

Absolutely no power on my Toshiba flatscreen lcd led tv. In a lighting storm we unplugged all of the appliances. This tv still was damaged because it was connected to the cable box via a hdmi cable. Not a...


If the HDMI cable was the only connection, then the high voltage pulse would have had to go through one or more of the video wires in the cable, through the video board, and back out the HDMI cable shielding. What troubles me is you should see the unit come up to standby and refuse to power on. That suggests there was something else connected besides the HDMI cable or the base made a decent ground. At least the panel is worth $150 or so (it is highly unlikely it was damaged).

May 14, 2011 | Toshiba Regza 46RV525U 46 in. LCD HDTV

2 Answers

I have a Emerson 32"


The simples way to go about that is to unplug it, wait 30 seconds and then plug it back.

if it doesn't come on then it has a problem, which may be with the power board or the main board.

I have seen this particular TV with bad main board and bad power board (in fact it has two power boards) and unfortunately I can't suggest which one is more likely to have happened.

Sorry...this one will be calling for a tech to look at it.

Don't kill the messenger :-)

http://www.coppelltvrepair.com

Jan 04, 2011 | Emerson LC320EM9 32 in. LCD HDTV

1 Answer

TV DOES NOT TURN ON STANDBY RED LIGHT STAYS ON


Hi Friend,
Check your TV's remote battries. If they are good, then, power off the TV at the main wall socket and unplug the power cord, leave it for 5 minutes. Now, connect back the main power cord, hold the Power On/Standby button on your TV and power then turn ON main switch on the wall. This should resolve your issue.

Thanks,
Shiva

Dec 19, 2010 | Sony Bravia KDL-40V4100 40 in. LCD HDTV

1 Answer

Standby light blinking tv doesn't turn on


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Dec 14, 2008 | Sony Bravia KDL-40V4100 40 in. LCD HDTV

2 Answers

Power loss


Try unplugging and then plugging the TV back in. If you can now turn it back on then you have a bad main board. If this does not make any difference then you have a bad power board. Hope this helps.

Nov 13, 2008 | LG 26LX1D 26 in. LCD HDTV

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