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My Samsung Model LN40B540P8F Flat Screen Keeps automatically switching from cable mode to PC mode to AV mode on its own?

The TV was turning itself on and off and would not respond to remote control or manual buttons. I had it repaired for a bad module. Now while watching the TV the mode will just change to AV and then switch to PC mode and just continues this. If the TV is turned off for a while you can watch regular TV until it starts switching modes again. I tried totally unplugging from power source to see if it would reset the TV, this didn't work.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 373 Answers

SOURCE: TV will not switch back from AV mode to TV mode

did try and push the channel

Posted on Feb 05, 2009

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  • 147 Answers

SOURCE: set turns itself on and off with no picture nor sound

You have a major problem with this set. Could be the main board, the Y-SUS board, or the power board or some combination of these.

Posted on Mar 30, 2009

  • 5 Answers

SOURCE: My remote control is not responding and I am

use the menu button on the the tv and select your option from there

Posted on Aug 21, 2009

yammy_alf
  • 666 Answers

SOURCE: RCA 37" FLAT SCREEN NON STOP FLICKERING/FLASHING SCREEN

you need to remove main ckt, (m.board) some part need to re solder specially in hot area. (lost contact i one of the flickering problem you encountered.

Posted on Mar 26, 2010

drifterK
  • 4924 Answers

SOURCE: AT NIGHT, TV SWITCHES ON AUTOMATICALLY AND CHANGES

what you describe is almost impossible ..the only explaining is someone with a compatible remote control messing around with you ..so ...pay attention ..and after that if you are completely sure that this is out of case...Leave a comment and I will search for another possible cause ..

Posted on Mar 17, 2011

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