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Samsung LN40A550P3F LCD flat screen tv having hard time coming on

My Samsung LN40A550P3F LCD flat screen tv keeps cycling when I turn it on...it eventually comes up but then I turn on the cable box it cycles again...and now will not come on with the cable box and my cable box flashes dui and the tv cycles again trying to come on again and again...it comes on with AV input but the hdmi input keeps cycling

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: green screen vizio lcd

My 37" vizio I bought in Dec 2007 did this (green screen at start-up on all inputs). At first it went away by itself after you left the unit on for 15 minutes, but then 2 days later the whole thing DIED. Luckily Costco has a 90 day return policy on TVs.

Vizio tech support suggested this (before it died that is):
Please try to reset all setting and then to see if the problem is solved. 1. Press the Menu on your Remote Control;
2. choose Set up on the OSD;
3. then choose Reset All settings;
4. Press the Exit on your Remote Control to remove the OSD.


Posted on Jan 09, 2008

  • 103 Answers

SOURCE: HDMI Malfunction

You may have to activate that imput through your menu.Alot of plasmas have the ability to mute imputs.

Posted on Mar 03, 2008

mistersony
  • 320 Answers

SOURCE: KDL-32XBR6

Try resetting the TV by holding down the "up" button on the remote (with the TV powered on) and then, while you hold down the up button on the remote, hit the power button on the TV. This should do a "factory reset" which will wipe all settings in the TV. There is no reason why the TV should not "remember the last input it was on when it was ;last turned off. Also be sure that the TV is not plugged into a switched AC outlet, like the outlet on the back of the cable bix. The TV should be plugged into an output that receives power at all times.

Posted on Oct 19, 2008

  • 1 Answer

SOURCE: on a Daytek 46 in LCD TV, no AV Digital Cable Signal, but HDMI OK

Had the same problem.
Fixed by unplugging everything from the power source, leaving for 2 minutes then plugging back in.
Works fine now.

Posted on Oct 31, 2009

dave1645
  • 834 Answers

SOURCE: LG tv shows av inputs as black & white

you need to plug all three colors in not just yellow
red blue green need to be pluged in their respective colors

Posted on Nov 28, 2009

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