Samsung PN42B450 Plasma TV Logo
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Anonymous Posted on Oct 07, 2014

How to factory reset with only remote, while screen remains black w/ 5 thin horizontal colored lines streaking. Why is screen black?

Screen comes on but remains black, 5 thin colored horizontal lines streak the screen. Source button doesn't do much but make the screen flicker. Have replacement universal remote programmed. Want to factory reset but screen remains dark.pn42b 42inch samsung plasma.

1 Answer

The Knight

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  • Samsung Master 76,851 Answers
  • Posted on Oct 07, 2014
The Knight
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Without a proper screen, you can't do a factory reset to this set. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

5 Related Answers

Anonymous

  • 192 Answers
  • Posted on Jun 03, 2007

SOURCE: LN-T4665F 46 in. LCD- Black Line across screen

The set is under a year old and is under warranty. The LVDS cable inside these sets have a history of coming loose. The problem could be the panel. Either way, the set is the problem and needs to be looked at. This set is worked on in the home and does not need to be taken to a shop, so, you can still use it. Contact Samsung at: 1-800-SAMSUNG Hope this helps.

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Jay Henderson

  • 261 Answers
  • Posted on Feb 06, 2008

SOURCE: Horizontal lines on Samsung Plasma

Sounds a lot like the Power supply board. But you have to check it out further to be sure. Email me back and we'll chat. GURU JAY

Anonymous

  • 106 Answers
  • Posted on Jan 07, 2009

SOURCE: thin black line

Try to replace the YSCAN board. If not fix it, then it's the PDP Panel failure.

Anonymous

  • 2 Answers
  • Posted on Jun 08, 2009

SOURCE: Samsung Plasma 50" No Picture but have sound

BAD Y BOARD

roety

Eric Rotmil

  • 587 Answers
  • Posted on Aug 19, 2009

SOURCE: 42 inch samsung plasma tv black vertical lines

Hi, Depeending on the thickness of the lines matters. If the lines are Black and about 1-2 inches thick it may be a bad bottom buffer board or a bad panel (screen).
If the lines are thin 1/16 to 1/8 inch it is most likely a bad panel.
You can open up the set and depending on the model, see the thin board/boards running across the bottom with ribbon cables going to the panel. You may be able to attempt reseating the ribbon cables, but be careful as some retainer plugs break very easy.
If the lines are thick black and the reseating doesn't correct it you may be able to buy the coresponding buffer. Unfortunately some bottom buffers are actually part of the panel. If you are not comfortable taking it apart then call a professional but be aware labor charges start around $200 not counting parts, panels start at $600 up to over $1000
hope this helps
Thanks
Eric

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

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