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My Samsung LCD TV constantly reverts back to test mode and resets all of the settings. I've tried the "press volume on the TV and then press menu for 5 seconds until the mode switches to standard or dynamic" countless times. I've done the 128 mute power on, went to reset and went through the programming cycle - making sure test mode was off - half a dozen times; nothing helps. The TV is a little over a year old and out of warranty, although it's had this problem since I bought it but I never took the time to address it with Samsung, so I'm probably hosed. Any other solutions or advice out there?

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  • marty Jun 17, 2009

    The exact model is LNT4671FX/XAA

  • marty Jun 17, 2009

    Cheaper than I thought it would be, actally; I was worried I would be spending a fortune.

    Two more questions for you:

    1.) Is this a common problem? and,

    2.) Is it difficult to replace the unit? I ask because my TV is mounted to my wall, so it's gonna take some work getting it down.

    Thank you for your help! It's very much appreciated.

  • marty Jun 18, 2009

    Thanks again for all of your help! I'll order the part and that'll hopefully take care of it.

  • marty Jun 18, 2009

    Thanks for your prompt replies and solution! Great service!

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Hi,
It seems problem with EEPROM chip in system control section of TV as EEPROM holds saved service / adjustment data.
Let me know exact model of TV to find out main board of TV some where available because system control section is located on main board and these are non repairable on component level. Board swapping is only option in LCD TVs.
Thanks.

Posted on Jun 17, 2009

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Posted on Jan 02, 2017

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My TV had the same problem and I have managede to get rid of it. The solution is very simple. This displays mean that your TV is in the " Store Demo" mode and any changes you make will last only for 30 minutes and when the TV is turned off the settings will change back to the normal. Whether you TV is in the "Store Demo" mode can be confirmed by pressing the "Info" button on the remote and you will see that "store demo" appears on the screen. To change this mode to the "home mode" you will have to press the "Volume button" on the TV and when the volume sign appears on the screen then you will have to press the "Menu" button on the TV (not on the remote)and hold it down for about 7to 10 seconds. This changes your TV mode from "store demo" mode to the home mode. Confrim whether the store demo mode has been put off by pressing the "Info" button on the remote to see whether the store demo sign appears on the screen. The store demo is set by sales persons in the shops so that any demonstratation/changes that they make while showing to customers will be temporary as the settings revert back to the original.

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Unless by muted you mean you can lower the volume to a listenable level but it reverts to full when you restart it.

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Please rate my help++++Thanks for using FIXYA

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Modified Picture Settings Reset Each Time TV Is Turned Off/On


Your TV may have been put into shop mode or demo mode. How to get out of "Shop Mode"



1. Press [Source] to get to the Air or Cable input on the TV or TV remote


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Alternative Method



Press [Source] on TV remote to get to the AIR or CABLE input
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Samsung 37


It sounds like your TV is set at Shop Mode. To veify that turn on your TV and press the info button on your remote, some info will be displayed, If Shop Mode appear please follow the next steps...

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