Question about LG 42PX5D 42 in. Plasma HDTV

1 Answer

TV will not power on.

The TV is in standby mode, indicated by a red light. When powered on, it turns green. I have attempted to power it on literally hundreds of times today. Each time, the light turns green, a clicking noise occurs, then the light turns back to red, and the TV is not powered on.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • LG Master
  • 5,568 Answers

The clicking you hear is a relay that connects, then disconnects the AC to prevent fire or further damage.

If it just fails to turn on, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself.
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.

Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.

There are likely two power supplies, a main (larger) and possibly a separate supply for the plasma display.
Without inspecting your set it is difficult to determine which may have failed since the high voltage supply may use an output from the main supply.
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace it or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

Not easy to diagnose without having made a few measurements first.

Posted on Sep 29, 2009

Testimonial: "Thank you for the insight, I will follow your suggestions and see where the path leads!"

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Runco flat panel tv displays solid green then blinking red light. What doe this mean?


How many times this standby/power light blinks at one time switch ON? Count it carefully. These blinks are fault indication, and known as blinking codes. From the number of blinks occur at one time switch ON; you can get an idea about the faulty circuit stage inside the TV. This will make repair easy. For more information, check the link http://electronicshelponline.blogspot.com/

Nov 14, 2013 | Runco Televison & Video

1 Answer

Hello, I have recenty acquired a Philips CRT 29PT9420 Television. However. when i attempt to turn the TV on, the light at the bottom of the TV (Standby, On, Off light) flashes between green and red for 2...


Switch the TV on: Press the power switch A on the front of the TV. A green indicator on the front of the TV lights up when the screen is on. If the indicator is red, press the
-CH + keys on the remote control.
The green light blinks every time you press a key n the remote control.

Ref. link:
https://www.manualslib.com/manual/173137/Philips-29pt9420-69r.html?page=4#manual

Oct 11, 2017 | Televison & Video

1 Answer

The "on" light is always green, even if turned off. Why?


It occurs when your wii in the Standby, but WiiConnect24 is enabled with Standby Connection is enabled. the content can also be received when the Wii is left in standby mode.

WiiConnect24 can be turned on or off via the setup setting. While the console is in standby, the power LED indicates the current status of the standby connection,

  • Red indicating Standby - wiiConnect is off,
  • Yellow indicating Standby - Connect mode is on. If you hold the power button for 3-4 seconds, the Wii goes into standby mode with Standby Connect off. and WiiConnect24 will not operate until the console is turned on.
  • Green ...

Jan 18, 2010 | Nintendo Wii Console

1 Answer

I bought my son a 19" philips tv model # 19pfl340d/27.in order to turn tv on it must be unplugged for 10-15 minutes.The first one I bought did the same thing and I returned it.this one is exactly the...


The remote control will not operate the TV when the TV is in the OFF mode (No LED lit on front bezel). To change the mode from OFF to STANDBY or ON, press the POWER button on the side of the TV. Once the POWER button is pressed, the LED will change to either red to indicate STANDBY or green to indicate ON, whichever mode the TV was in prior to being turned off with the TV POWER button.

By pressing the POWER button on the side of the TV, the mode will toggle from OFF to either STANDBY or ON. If the POWER button is pressed and then the LED on the bezel is red, the TV is in STANDBY mode and will need to be turned on using the remote control. If the POWER button is pressed and then the LED on the bezel is green, the TV is ON.

Nov 11, 2009 | Philips 19PFL3403D/27 19 in. LCD TV

1 Answer

Tv went off while watching a program power standby red light blinks 6 times then pauses then repeats tried unplugging unit waiting a few minutes then replugged same results nothing. can anyone help me ?...


Here's an excerpt from the Sony Manual online. And the link - http://esupport.sony.com/US/perl/webtree.pl?template=EN&mdl=KDF55XS955&content_id=68&category_id=11&problem_id=52

The POWER/STANDBY (red) indicator flashes three times
If your power/standby indicator is flashing in a pattern of three flashes, this may indicates that the lamp cover is not attached securely. Follow the directions in the Operating Manual under changing your lamp that related to closing and securing the Lamp Cover. Ensure that the Lamp Cover Door is securely fastened by tightening each screw.

The POWER/STANDBY (red) indicator flashes continously
If your power/standby indicator is flashing continuously, and the lamp cover has been secured, your TV may be in need of service.

The POWER/STANDBY indicator is lit up green (not flashing)
A sustained green light indicates your TV is on.

The POWER/STANDBY indicator is lit up red (not flashing)
A sustained red light from your power/standby indicator simply indicates that your TV is in standby mode. This shows you that your TV is ready to be turned on with the remote.

Is it the power light and not the lamp light? If the lamp light is flashing then replace the lamp.

Apr 07, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

SONY GRAND WEGA KF-50WE610 can't turn on TV screen.


Ths 5 blinks usually indicate an AKB problem. There is a break in the video path. I'll look up your specific model and post the results here. Please update this if you wish to attempt the repair yourself.

Thanks,
Dan

Mar 19, 2009 | Sony Grand WEGA KDF-55WF655 36" Rear...

3 Answers

The Power Light is Red


yeah, should stay red when unit is turned off, indicating there's power but it's doing nothing.

Per user manual:
Solid red - power off (standby mode)
blinking red - power off (now cooling)
blinking green - power on (preparing to light lamp)
solid green - power on

Mar 08, 2009 | Panasonic PT-40LC12 40" Rear Projection...

1 Answer

Picture wont come on screen


this problem is in the power supply.the red lights indicate as the standby mode.

Jan 23, 2009 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

26PF8946/37 Red light


Hey habo,

The red light you are referring to most likely is the power indicator light. On many newer TV's this light will appear red when the TV is off or in "standby" mode, and green when the TV is in operation.

Please keep in mind that some TV models may use the power indicator light to notify owners of ay potential hardware problems as well, so you may wish to refer to your owner's manual documentation if you have been encountering any problems during TV operation.

Hope this helps you out.

Sincerely,
Aaron
Go Ahead. Use Us.

Jul 22, 2008 | Philips 26PF8946 26 in. HD-Ready LCD...

2 Answers

Problem turning on the TV


I have the same problem. Did you find a solution?

Oct 24, 2007 | Sony Grand WEGA KDF-70XBR950 70" Rear...

Not finding what you are looking for?
LG 42PX5D 42 in. Plasma HDTV Logo

348 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Televison & Video Experts

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

74383 Answers

Are you a LG Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...