Question about LG 55UB9500 55" 4K Ultra HD TV with 2160p, 240Hz, WebOS, 3D, LED Plus

1 Answer

Screen flickers on and off

Suddenly only HDMI 4 input gets a signal on TV from desktop, HDMI cable should be fine its brand new and now the screen flickers off for about half a second then comes back on about every 30 seconds to a minute minute

Posted by Anonymous on

  • Anonymous Apr 09, 2015

    Yeah we are good now we have discovered that his is either a problem with the HDMI cable or a failing graphics card on the computer we were using

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1 Answer

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  • LG Master
  • 687 Answers

If all your other HDMI inputs are out, then I recommend replacing the MAIN PCB
try the following web site: https://www.encompassparts.com/model/ZEN55UB9500UA/_/_/LG/55UB9500UA/55_INCH_UHD_4K_SMART_3D_LED_TV_W_WEBOS
page 4 lists a part number for the MAIN PCB,
HOWEVER, PLEASE MAKE SURE YOU USE YOUR COMPLETE MODEL NUMBER TO ASSURE THE CORRECT PART.

Posted on Apr 14, 2015

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SOURCE: plasma

if your tv is on warranty take it back to best buy for a replacement.good luck

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SOURCE: "No signal" sign on TV screen using HDMI selector

it sounds like a refresh issue, double check you selector and make sure it fits the refresh of the tv. i had this once with a sharp where the tv was 120hz and the selector was 60 and it created a no signal and when it did come in it was jumpy. if you have a 120 tv then selector should be the same.

Posted on Apr 27, 2010

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SOURCE: Sony Bravia does not recognize my Dell Inspiron 1525

I have the 1525 and you have to do extra steps each time you want the HDMI to be recognized by the Bravia - too bad it is not automatic as it is with some. Anyway what you have to do is have the HDMI cable connected from laptop to TV then go to your desktop - right click on an open area (away from icons), a menu will appear, let the cursor hover over Graphics Options - you'll then see Output To...then you'll see Intel Dual Display Clone...hover over that and you'll then see Notebook + Digital Television...left click on that and you should see your desktop on the TV in a few seconds. If it does not work the first time...get your movie or whatever you want to show up and ready and go thru these steps again...stupidly complicated aye? when it should automatically detect and show...are other TVs like this?

Posted on Dec 07, 2010

SOURCE: 55 inch led tv will not recognize my hdmi cable?

on you r remote there should be three hdmi settings just try each one it will likely work with one of them

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jerry_kramer
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SOURCE: LG TV HDMI no signal problem

You need to make sure the TV is set to the same input that you are plugging into. This is done in the video menu.

Posted on Oct 06, 2012

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