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Lg 47dl450 does not turn on the red power light only blinks

I've read it's a common problem and that it's usually bad capacitors on the power supply board but I don't have any way to test them and none of them are popped up or leaking. And I was wondering witch ones usually need replacing

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These blinks (flashes) are fault indication. By the number of blinks occur at one time switch ON, you can vet an idea about the faulty circuit stage inside the TV. Count the blinks occur at one time switch ON, carefully. Do it once again, and make sure about the number of blinks. If the flashes are continious, non-stop, the main system control IC should be suspected. If you wish to get more details, check the site linked here. It has blinking codes detail to many brand TVs. Pull up older posts. http://electronicshelponline.blogspot.com/

Posted on Dec 26, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 230 Answers

SOURCE: No longer turns on

It's well worth replacing the capacitors, but this problem can be caused by a short on the power supply (Which is what the caps do). Most shorts that arise in power supplies are result of a shot transistor or diode and of course the electro caps. Check these while your changing the caps.
Good luck with it.

Posted on May 25, 2009

  • 2318 Answers

SOURCE: Tv will not power on. Led light is meaningful.

Is very unlikely that the backlight inverter board is defective, even if it was the tv should power ON but will not illuminate the screen and no video.
Check this link to find the power supply.

Posted on Jul 25, 2009

CAYPIANAN
  • 227 Answers

SOURCE: Philips 42PF7320A/37 blinking red light

hello, amigo if the all the caps are godd then you have to replace the power supply board. don't try to fix it this is not an easy task. you are looking at almost $200.00 with tax an shipping. just go to google and type your tv model # and ask for the power supply board or just look for the part# on the board itself. good luck

Posted on Jul 29, 2009

barbu51
  • 566 Answers

SOURCE: Working on a friend's LG

Hi syzonker
Before you replace the power supply , check for swollen(rounded top)capacitors.
Also check and replace C126 47mfds/50 volts
And C520 1000mfds/16 volts
good luck and let me know if you need further help

Posted on Feb 16, 2010

Testimonial: "Was getting somewhere with barbu51 when suddenly couldn't reply to him anymore. FixYa said one of his solutions was rated low - BUT NOT BY ME!"

budmrtn
  • 11361 Answers

SOURCE: Vizio SV470XVT1A has no backlight

The 24vdc is turn on by the signal from the main logic board, it is not always on, the standby 5vdc is always on. So yes it can be the power supply board is bad, but just to besure we need to find out if it is getting the turn on signal from the main board first.
You can have 24vdc at the inverter board and it will not light up the CCFL until it gets the signal from the main logic board to turn the lamps on (this is the STANDBY condition, the TV is on but the screen in not lit up util it see the video signal).
Send me good clean and clear pictures of the power supply board, budmrtn@aol.com, connectors of the Power supply, bottom side of the board, then I may be able to tell you which pin is a control input pin. Most people will just throwing parts in and hope that they one of the parts will fix the problem. Used Power supply module for this TV is over $100. http://www.google.com/products?rlz=1T4GGIH_enUS282US283&q=delta+DPS-379AP&um=1&ie=UTF-8&ei=USsxTKn3J6TonQfFlJGEBA&sa=X&oi=product_result_group&ct=title&resnum=4&ved=0CCsQrQQwAw

http://www.shopjimmy.com/catalogsearch/result/?q=Vizio+SV470XVT+

Posted on Jul 05, 2010

Testimonial: "Bud helped me fix my TV! It was only 1 1/2 years old. I was looking at a repair bill close to $300 - $500 and I fixed it with a $60 board! Thanks!!!"

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New to this site! Hope someone has an answer that can help... I have a LG 55 LCD flat screen model 55LD520-UA. Try to turn it on. Bottom light blinks red 3 times blinks blue once, then nothing.


Hi,
Try to change the capacitors first. Normally lost of lcd tv have problems with the capacitors and which lead to powers problems. May you will not find visually that the capacitor is fault. So go for changing the capacitor also check the following video. Which will help you understand how to check the power supply broad. Also take care while working with the power board there is a risk or electric shock Also one of the capacitor in the power supply holds charge even when you have remove the power supply.
Testing LCD TV Power Supply BoardsSTEP BY STEP

www.electro-medical.blogspot.com

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Hello,

a blinking power light and no video is a common symptom of a failure on the power supply board. This is caused by parts called capacitors that have overheated and failed. If you can do a little soldering then you can repair the monitor yourself and save yourself from having to buy a new monitor. The repair is easy, you will need to replace the filter capacitors on the power supply board. Here is a link to a kit with the proper parts needed to rebuild that board. LG Repair kit link The repair should only take about 10 minutes to complete. I hope this helps,
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You were on the right track, it sounds like the power supply board is gone. It's more likely one of the power chips that went. (The capacitors are usually not old enough to have gone bad yet.)
(part of it still works is why you get the blue LED when you plug it in.)

If you decide to try to fix it yourself, BE CAREFUL! The power supply board has capacitors that can hold high voltages for many hours after the TV's been unplugged.The equivalent of sticking your finger in a light socket.

You'll need the part number off the power supply to get a replacement.

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1 Answer

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Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps

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1 Answer

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I would have to say that you have bad capacitor in the power supply.Have you taken the TV apart?If you can take it apart,and send some pictures of the board with the power cord going to it,I can tell you which capacitors if any are bad.They have a rounded top to them instead of being flat.Also,how many blinks does the power light blink?Usually it's a series of flashes,and then it repeats.I hope this helps.Thank You very much!
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Hello,

Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.

if otherwise the power supply board is faulty you can try websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Hope this helps

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1 Answer

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Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps
Please rate my reply ++++

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