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Troubleshoot LG BN44-0689A Power Supply Board, (No power to TV) Model LG 65UJ6300-UA

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The Knight

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If you wish to get some details; check the site linked here. Pull up older posts or search the site by type in the brand name of your set, at its search box at the right column.. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
https://elektrotricks.blogspot.com/
Search the site by type in the brand name of your set, in its search bar at the right side column, and press enter. See it in Webview by mobile or by desktop computer. Mobile View has no search box

Posted on Jul 17, 2021

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1answer

TV not powering up. Power LED flicking in Red

Unplug the TV completely from power and remove the power cable from the wall outlet. Unplugging Power from the TV. Press and hold the "Power On" button on the TV for at least 15 seconds. Plug the TV back in and power it on
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I just changed out the power board on a vizio tv. have no power still any ideas

How To Fix Power Problems in 5 Easy Steps

1. Verify The Display Is Not Showing An Image

If your TV shows a black screen that doesn't mean it's not on. This could be a panel or a source issue rather than a problem with the power.
Press the MENU button on your remote or on the side of the TV. If the TV's menu appears on the screen after pressing that button then the TV is on and does not have a power issue. The black screen is more likely the result of a source issue such as a problem with cable or satellite TV service.

2. Use The Power Button On The TV Instead Of The Remote

A problem with the remote might make you think there is a problem with the TV. It could be that the TV is working fine but the remote is faulty. Use the power button on the side of the TV determine if the problem is caused by the remote.
Users sometimes think there are no buttons on Vizio TVs. Nearly every Vizio TV manufactured in 2014 or later has a power button on the back of the TV so it's easy to miss.
Reach around the lower left corner of the TV. The power button is on the back of the TV and this might be just what you need to get your TV working.
TVs made before 2014 will have an on/off button on the left or right side.
If this button works then the problem is coming from the remote. You might just need new batteries or there may be something blocking the IR sensor on the TV.

3. Power Cycle The TV

Power cycling can solve a lot of odd problems with Vizio TVs.
First disconnect the TV's power cord from the power outlet and leave it unplugged. Then press and hold the power button on the TV for 10 seconds.
After you have held the button for 10 seconds, let go then try to power the TV on.

4. Re-seat The Power Cord

A loose power cord might be causing the problem. The power cord can be detached from most Vizio TVs. It can easily get disconnected by house pets or if the TV is moved while cleaning.
Unplug the power cord from the back of the TV, reconnect it again, then test the TV.

5. Test The TV When Connected To A New Outlet

Verify the TV is using a functioning wall outlet.
You always want to attempt to power the TV on using a second outlet. Test a new outlet even if other devices work in the first outlet.
Connect the TV's power cord to a new outlet that you have not used used yet then test the TV again. Don't use a surge protector when using a new power outlet because these devices can sometimes be the source of the problem.
If the TV works now then it was the original outlet that was causing the problem all along.
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1answer

Visio m70 c3 will not power up

  • A TV
    WHY POST TV'S TO COMPUTER REPAIR HELP AND NOT TO TV.
    The TV needs service, get it done in shop?
  • the TV has no power at the wall
  • the TV has no power at some power strip. (or is off)
  • the TV has bad power supply board inside.
  • the TV remote battery is dead.
  • or worse, the modules inside are not cheap.
0helpful
1answer

TV will not power on. Red light flickers sometimes when I try to turn it on.

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The tv will not power on manually or with the remote, there's no clicking noise, no LED light on the front, no signs of life. There is no obvious ...

TV Will Not Power On



0helpful
2answers

How to shut off manually

UN55D6400UF TV Will Not Power Off If your TV is on but will not power off when you press the power button, you could be having an issue with your remote control or a faulty circuit inside your TV.
To determine the source of your problem, follow these steps:
  1. Power the TV on if it is off.
  2. Unplug the TV from the wall outlet for 30 seconds, and then plug the TV back in.
  3. namo_fileview.jsp?type=nfs&pid=decisiontree&did=57355&cid=yokn68wxkhym@namo.co.kr&sep=%7c
    1. Press the POWER button on the remote control.
    2. [img src="http://support-us.samsung.com/cyber/namo/namo_fileview.jsp?type=nfs&pid=decisiontree&did=57355&[email protected]&sep=%7C" height="51" border="0" width="50">
      • If the TV powers off when you press the POWER button on the remote control turn the TV back on continue to Step 4.
      • If the TV does not powers off then there is a problem with the remote control. Click here to go to the Remote Control troubleshooting section of this guide.
    1. Press the POWER button on the TV.
      • If the TV powers off with the remote but does not power off with the power button on the TV there could be an issue with the touch sensor on the TV. Before setting your unit up for service try these two things.
        1. Try sliding your finger accross the power button.
        2. Have other people try using the touch buttons on the TV.
        3. If either of these two options work then there is not an issue with the touch sensor on the TV. There are many variable that can limit the conductivity of a persons fingers. The conductivity of your fingers might not be enough to easily control the touch sensor on the TV.
        4. If the TV does not power off when you press either the POWER button on the TV or on the remote control, then the TV will need to be serviced. Click the Create online service request button below to have the TV repaired.
2helpful
4answers

No power

Got no power on my tv need sone advice as change fuse still not working
0helpful
1answer

My proscan 42la45h wont get power. no red or blue light

U check the power source like the power a/c outlet?Yes?Tries tv unplug,replug it back like about an hour later.The tv should resetting itself back to the tv factory setting,tv now should have power again.Not.The tv have a power supply board problems and the causes.That the board where the tv power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.
1helpful
3answers

I lost power in my house. I cannot get the TV to power up. Is there a reset button? what do I have to do to get power on the TV? All the other components linked to the TV are working.

Now,there is no power to the tv at all?Yes.Tries tv unplug,replug it back like about and hour later.That the resetting tv back to the factory setting.The tv now should be working again.If tv still have the same result,tv power supply board have problems,that the board,where the power a/c cord plug into it.Check the tv power supply board fuse,because u lost main power to the house.If u lucky,the tv power supply board only have a dead fuse,fuse is near where the power a/c plug,plug into tv to get it power.Fuse can buy it anywhere like Radio Shack like $1.50.After u repalced the fuse,if tv still getting the same result,than sorry ur whole power supply board have problems and it is dead.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.
95helpful
2answers

I turn on the T.V. and the blue light is blinking and the T.V. doesn't turn on

1. simultaneoulsy press and hold [menu] and [vol-] on TV side panel
2. press and release [power] on TV side panel
3. count to 5 and release[menu] and [vol-]
4. TV should have turned on
5. if not, unplug TV and press[power]
6. repeat from step 1 if the TV does not power on the 2nd time
0helpful
1answer

My kid power off tv by power button on tv, next time i could not

switch tv on the switch can not contribute to that. unless the following goes fault
i switch getting fixed on one position(holding)
ii check power on a input of tv and input fuse
iii power supply, i have said that because if a power supply is ok, sound was going to be there.
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