Question about LG 42PX5D 42 in. Plasma HDTV

1 Answer

My plasma screen is not coming on, on the scrren but the power suply comes on

Posted by on

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.

  • Master
  • 1,591 Answers

There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for 5 mins, then try.

If you aren't tech savvy, this unit needs to go in for repair.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.
http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

Posted on Mar 21, 2011

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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Hi got a RCA TV-32LA30RQ with thin vertical lines on front right side . I had place a power suply board and still the same problem beside that everything on tv is alright. Can you help on this thanks


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Oct 15, 2016 | RCA Televison & Video

1 Answer

Wired in new power box only back light comes on help


You must replace electrolyte capacitors inside the power board.

May 30, 2016 | Polaroid LCD 2000 LCD2000 TV flat screen...

1 Answer

I HAVE A PROBLEM WITH A POWER SUPLY OF SAMSUNG PLASMA PS 51 E530 ALL VOLTAGE IS OK,5VOLT 12 VOLT IS OK,BUT VS AND VA VOLTAGE 0VOLT SO NO SCREEN,I CHECK POWER ON AND VS ON IS OK,can you help me


Sounds like it could be a bad capacitor on the power supply, or possibly on the video out circuit. Bad capacitors are a common problem in Plasma and LCD monitors and T.V.'s.

Jun 25, 2014 | Samsung 51 INCH PS51E530 Full HD Plasma...

1 Answer

From black screen can't go to F2, blue scrren comes


Give this a try you probably have a mbr virus.

Download The following iso listed below. It is the latest version of the Kaspersky rescue disk. You need to burn it to a CD with a program like Imgburn (Which is also FREE like the iso file). Then you need to boot from the CD and run the scanner. It should fix you right up.

Kaspersky rescue cd download:
http://majorgeeks.com/downloadget.php?id=6501&file=1&evp=ef4247319d4b536cb88b74d1ae4842b0

Imgburn download:
http://majorgeeks.com/downloadget.php?id=4870&file=15&evp=0636b68877cb69b15faa3374cb1dcd89

Sep 02, 2012 | Dell Vostro 220 Desktop Computer

1 Answer

Dell symbol flickers when you put tv on,black screen but have sound.had problem before,was told it could be power supply had it replaced ,worked fine 4 days later went out magain what could it be?


hi yes it could be the power suply but if you had a light gray horizontal bar in lower part of the screen before it went out this spell big problem other wise it maybe only power suply
that can be bought on ebay

Sep 28, 2010 | Dell W5001C 50 in. Plasma HDTV

1 Answer

Hi weve got plasma phillips 42 inch model no


is internal power suplie board defective,need to be checked by a tech. send to repair.

Feb 18, 2010 | Televison & Video

1 Answer

Vizio plasma. screen went black, and the power light went out.


Sounds like the power suply went. I don't know that model off the top of my head, but you might find a replacement here http://www.electronica-usa.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=EU&Category_Code=PLA
-=/ Daft Tech /=-

Oct 26, 2009 | Vizio P50HDTV10A 50 in. Plasma HDTV

1 Answer

Red dots on the screen. easy to see on darker channels.


I think that this is a major problem that deals with the power suply.

Jul 23, 2009 | Pioneer PureVision PDP-504HDE 43 in....

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

40 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

The Knight
The Knight

Level 3 Expert

74106 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18390 Answers

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

Answer questions

Manuals & User Guides

Loading...