Question about LG MZ-42PZ14 42 in. Plasma Television

1 Answer

Black flashing screen???

My 50" LG Plasma is flashing when turned on. I hear the audio of the channel chosen on the satellite box and can briefly see images through the flashes but flashing will not stop. Any clues at all out there? Damn things only a year and a half old!

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.

  • LG Master
  • 5,568 Answers

Damn things only a year and a half old!
Aren't you glad you threw your 15-20 year-old CRT TV out?
If it is affecting video only, the display's 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 two separate boards with mostly larger components on them; they will have ferrite core transformers on them and several larger capacitors which are cylindrical and mounted vertically to the board.

 
Before touching anything inside, especially on either board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
 
The section most likely to fail and cause your problem will be one that you see associated more with the display than the incoming AC line; the latter is the main power supply and its failure would result in no sound or video. 
 
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 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.

Posted on Oct 07, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Not widescreen on regular channels only hd channels


Sounds like a setting in the cable or satellite box or how you have the TV connected. Using HDMI it should resize automatically, but again it could be a simple setting in the cable/satellite box or in the TV itself.

Mar 24, 2014 | LG 50PG20 50 in. Plasma HDTV

1 Answer

Plasma TV


did you hear the sounds? or maybe you have defective power source in hot side..

Oct 02, 2007 | Panasonic TH-50PX60U 50 in. Plasma HDTV

1 Answer

My lg plasma tv wont display anything but i still can hear it..


Here's a video Alfred Sellers suggested as a solution to your problem from YouTube:


Broken LG LCD TV Capacitor Black Screen My Wont Turn On

Feb 20, 2013 | LG 50PG20 50 in. Plasma HDTV

1 Answer

TV was working fine and then the picture has totally gone, just a Black screen as though it is switched off, Audio on all channels are fine and turns over as normal. No Text no nothing on the screen...


solution
step 1 : at first test your fly back transformer
step 2 : A.C. transformer test
step 3: adjust TV yoke coil

Send report :babul_jpi90@yahoo.com



Jul 28, 2011 | LG 50PS60 50 in. Plasma HDTV

1 Answer

Where are the red and white jack sockets to connect my new 50in lg plasma screen to my old wired 5.1 speaker system?


I am sorry to say that it does not have a left /right analog audio output. It only has a digital optical output on it. Unless your receiver has a optical input, you cannot use your set's audio out. If you are using a cable box or satellite receiver, you can their left /right output for you audio signal.
I hope this helps,
Skyassoc

Dec 11, 2010 | LG 50PG20 50 in. Plasma HDTV

2 Answers

Green screen on Lg 50" plasma TV, you can hear the channel but it is a full green screen


I am having the exact same problem with my LG 50". It's two weeks old. Has anyone found a solution?

Oct 28, 2009 | LG 50PX5D 50 in. Plasma HDTV

2 Answers

No Video but have Audio


I found my product manual and called the Tech Support line. They said it was a problem with the display and would have to schedule and appointment to fix it.

Jun 19, 2009 | Dynex DX-LCD32-09 LCD TV

6 Answers

LG PLASMA TV WITH COLOURED LINES OVER SCREEN


If the Video (Picture/Pix) is gone but you can hear the Audio (sound), then it could mean the YSUS PCB Assembly is gone/kaput/finish. Can replace the PCB, not repair the PCB due to timing circuitry involve. Cost maybe roughly $500 depending where you located. The PCB is located on the left hand side of your TV when you are facing the back (Back open). Might find 3-4 brown flex membrane connecting to the plasma panel. The PCB has a silver or black aluminum heatsink (big) on it.
Good Luck.

Dec 22, 2007 | LG 42PX5D 42 in. Plasma HDTV

Not finding what you are looking for?
LG MZ-42PZ14 42 in. Plasma Television Logo

88 people viewed this question

Ask a Question

Usually answered in minutes!

Top LG Flat Panel Televisions Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18298 Answers

The Knight
The Knight

Level 3 Expert

68197 Answers

Are you a LG Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...