Samsung HP-R4272 42 in. Plasma HDTV Logo

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Brad Posted on Dec 07, 2011

Hpr4272x changes brightness.

Watching tv tonight and the brightness started changing. It goes from normal to dim. I have UVerse and it is like when I hit the guide button and the screen dims. It is not the uverse box. I unhooked it and the screen kept changing. Dont know if it is related but I also have a vertical strip of lines on the right side of the screen maybe 2' wide. This as been going on for a few months.

5 Related Answers

Anonymous

  • 579 Answers
  • Posted on Jan 06, 2008

SOURCE: 40 inch lcd blue line vertical

The display screen is made of a matrix of elements connected to cables along the side and top. On your unit, some of these many, tiny connections are making contact intermittantly thus losing the elements in that area. These contacts are held in place with just pressure and if that is disturbed, you lose that line of elements. Try squeezing the cabinet of the TV on the outside at the top in the area of the loss and see if that makes a difference. May have to go inside and see if the contact assembly is disturbed or warped or something.
Hope ya fix it!

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Anonymous

  • 98 Answers
  • Posted on Feb 06, 2009

SOURCE: Vertical lines in LCD tv screen

Need to check the two things.

1st -- need to exchange T-con Board.
2nd -- need to exchange the cables between T-con & LCD panel or
between T-con & Main(LVDS cable)

Anonymous

  • 12 Answers
  • Posted on Sep 12, 2009

SOURCE: Programing Remote

1343 or 1005 are the codes - press the TV mode button and the OK button together - the release at the same time - the top row of mode buttons needs to blink twice - then enter the code - the TV button should blink 2 times - try the power and volume buttons - if it worked then be sure to press the ATT mode button again after so you can change the channels

Anonymous

  • 5 Answers
  • Posted on Nov 30, 2009

SOURCE: sylvania ld320ssx remote code for att uverse

Try 1864. It worked for a Media-Com remote, when none of the other codes worked.

Anonymous

  • 1 Answer
  • Posted on Jun 29, 2010

SOURCE: When I trun on TV (Samsung LN-T4661F 46 In), it

Samsung made a bad TV, the new part is $1200 I have the same issue. it is a blurred picture from left to right after about 10 min it goes away. (18 month old tv) it is only going to get worse.

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1answer

I have a Samsung 55in curved TV. It has auto dimming. In the evening with the lights out it dims to where it is difficult to see the picture. Can I get rid of the auto dimming?

If the brightness on your TV changes automatically (randomly dims and brightens), you may need to adjust the:
  • Eco Sensor function.
  • - And / Or -
    • Energy Saving function.
    The Eco Sensor and Energy Saving functions adjust the brightness of the TV to reduce power consumption.
    • When you set the Energy Saving function to Auto, the TV changes its brightness automatically depending on what you are watching on the TV.
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Picture brightness goes up and down while watching movies

T'Con board fault. Its ABL (Automatic Brightness Limiter) section circuit not functions well. Replace it. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
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Why is my TV picture dim

Hello David
It sounds that the back light inverter board, and back light CCFL lamps to your TV need to be checked. It will be best to contact any service technician, because to check its back light CCFL lamps, you must disassemble the display panel, a very skilled work indeed. If you are sound in electronics, you can check it. If you wish to know more http://electronicshelponline.blogspot.com/ check this link. It has details. Pull up older posts there by its left side bar, or see it in 'Timeslide' option.
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Have a new 40'' Vizio VO400E LCD HDTV and randomly the brightness pulses for no reason when I'm watching TV. We have it hooked up to a Directv dvr.

check to see if your TV has an ambient light sensor that automatically changes the brightness of the TV based on the lighting conditions. Sometimes the sceen on the TV can impact the sensor and dim the TV for bright scenes. You should be able to disable this feature if you like.
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Samsung Plasma Lines and Colors on Screen

yes it can fix. its only loose connections from LCD connectors. trust me. [email protected]
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TV screen became a lot darker than normal.

Hi.

yeah, opened the front flap of the TV>menu> brightness> increase. Sorted. No problem.

ain't gonna bother asking any more questions on this forum..........no help at all .

cheers, Pat
0helpful
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Sharp LC-42D43U 42 in. HDTV fades and fluctuates in brightness.

Hello bcall8,

Have you tried watching the TV function when just viewing normal TV? Does the problem still occur? I think the you may have a signal problem in the path between the DVD player and the TV, check your cables. Now what might also be the issue is input of the TV try using different inputs, sometimes there are incompatibilities with some of the input ports and equipment used on those ports. This happens often. If all else fails I would get a schematic and start looking at the RF, HDMI, Composite Video, S Video, and component video inputs and start comparing signals with the information from the schematic.

I hope this helps,
Thank you,
Shuttle83
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