LG 42PX3RV 42 in. EDTV-Ready Plasma Television Logo

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Posted on Aug 02, 2010

When i switch my LG 42PX3RV PLASMA TV on it flickers for a minute or 2 , can you please tell me what is wrong ?

5 Related Answers

Coldcut

Karl Whisenand

  • 1554 Answers
  • Posted on Apr 29, 2008

SOURCE: lg plasma

there are 2 types of flicker, one is the lamps that drive the display and the second is the sync signal of the video.
I assume the video sync is the flicker you see,
I would try connecting a different way to make sure it is not the tv,
connect using the aux /rca connectors to cable box.
and or connect using the cable direct bypassing the cable box.
I have seen several complaints about the hdmi cable signal being incorrect in some way,
this is the same issue that the svideo connector had in its early adoption signal was too hot or too low.
another thing to watch out for is the low light sensor on the front of tv if it gets an incorrect reading it can flicker the back light though it should be slow in doing so.
some times the flicker you see is not flicker but ac running through the sides of the picture from an ungrounded cable source.
how does it perform if you play a dvd player , with and without the cable box connected.

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Kirk Brown

  • 7 Answers
  • Posted on Jun 02, 2008

SOURCE: lg plasma tv 42pc3dv

you will have to have a tech come check that one out, your gonna need your y-sustain, z-sustain and both y-drive boards replaced.. its a common issue try to get your warranty extended if its out.

Anonymous

  • 1 Answer
  • Posted on Mar 01, 2009

SOURCE: Lg Plasma Display settings keep switching

When you boot up your tv for the first time, you get to choose between home and shop-mode.
In your case, he TV is set to "shop-mode".
Then it will go back to factory settings after 5-10 minutes. (so that customers won't mess up the settings all the time)

So change the settings from shop to home, and your problem is fixed!

Anonymous

  • 20 Answers
  • Posted on Mar 11, 2009

SOURCE: 42 LG Plasma picture distorted and flickering

replace the control module.

phil_frye

Philip Frye

  • 295 Answers
  • Posted on Nov 22, 2009

SOURCE: The screen on my 4 yr old 42 inch LG plasma keeps

I believe that you are experiencing an intermittent problem with what's called your florescent lamp ballast. The best thing is that it can be repaired/fix. There should be a LG repair shop in your area. Cheaper to bring it in than have a service tech come to your residence.
Should be between $200 to $300 for a repair.
Blessings,
A/V Media Guy

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Here are the service manuals that you will need:
http://elektrotanya.com/?q=showresult&megnev=LG%20&megnev2=42PX3RV%20&kategoria=&kat2=all
You also should check Z and Y sustain boards.
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Please leave rating if it helps. You may also want to look through some of the LG PLASMA TV training manuals (look at any one of them since the operation concepts are all the same).

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
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Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
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I hope this helps.

Your feedback is greatly appreciated.
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