Question about LG DN798

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Dvd player stuck in 'demo repeat mode'

I can't get the demo repeat mode from stopping on my dvd player (LG). I've unplugged the unit, replaced the batteries in the remote, tried stopping directly from the dvd player instead of the remote.. nothing seems to work and I can't watch movies right now, the demo repeat thing just loops. Anyone know of a solution?

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Pressing stop 4 5seconds works bt then there is no sound. Wat do i do to get sound?

Posted on Sep 28, 2012

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Hold the Stop button for 5 long seconds

Posted on May 06, 2008

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Try this: open the disc tray,press clear and then with the remote enter 00001 with the numeric buttons. turn off the player and then turn it back on.

Posted on Oct 18, 2007

Press and hold the power button for about 5 seconds to reset the player

Posted on Aug 15, 2007

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Posted on Jan 02, 2017

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1 Answer

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Put the unit in dvd mode. then press and hold the stop and eject buttons. The display should read "demo off". Then the tray should operate normally.

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The error code has a Nucleus Group and Number followed by an Error Code.
The Nucleus 2100 references
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Check the communication between the digital board and the hard disk drive by querying the device type of the device type of the hard disk.
The Hard drive 282206200034 is no $399.80 available from partstore.com which you can just drop in since it is formatted. If you can find a hard disk which is rare due to the small size no one buys, it can be formatted to just drop it in. You will need the hard drive ( 120GB ATA), the PC communication cable 312278590017 $22.75 and the Service DVD 312278590710 $36.96 which will allow you to format the hard disk for the unit. I would do this for you but you might have other problems with the system which can only be found with more diagnostics after the drive is installed. Or it could be a drop in and go.
For the unit which is stuck in trade (demo) mode,
Unplug the unit.
Simultaneously hold the Stop + Open close while plugging in the unit.

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6 Answers

Dvd player stuck in 'demo repeat mode'


If pressing the stop button on the unit doesn't work, try unplugging the unit for a few mintues, plug it back in, then press and hold the stop button again, that always work.

I agree that this is not the most superior device on the market and sound is average, but it has many advantages that others just don't offer - small size, no complicated cables, unbeatable price and has a very nice appearance, makes all other look like dinosaurs. Untill all others catch up with that, I'm keep this...

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This is what LG customer service will instruct you to do. I have a LG LDA-511:

1. Unplug your unit.
2. After unplugging, wait a few seconds then press and hold the power button (yes, while the unit is unplugged). This resets the unit.
3. Plug in your unit.
4. Press the eject button.

If the disc does not come out, then you need service from an authorized service representative.

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I had a LRM-519 that would not get past a very dimly lit "hello" on the LED screen. I called tech support and was advised to make sure no disk was in the unit and turn off the power from the unit (not the remote) and unplug it from the wall outlet. While unplugged, hold down the power button for 30 seconds then plug it back in. This didn't work the first time, but after a few tries it worked for me. My unit hadn't worked for nearly 3 months prior to this. Good luck.

According to LG support, it would have cost $69 for labor plus parts to repair the unit. The main board/power board is $40.

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