Why does it turn off after 20 minutes
1584962
Mine went in and out before quitting all together after 6 months...threw it away.
1584963
Change your setup, as suggested by others. Ours has never turned off unexpectedly, and we've sat through many many hours of movies using it.
1584964
There is an "Auto Power Off" option built in. You must be in "Optical" mode to turn it off. Even if off, if nothing is "flowing" through the device for a certain amount of minutes, it shuts off automatically. One other item . . . . if you are using HDMI IN and are trying to play something that uses DTS Surround Sound, it will shut off automatically - as if nothing is "flowing" through the device. This built in auto power off option should be deleted.
1267796
It shuts off automatically after 1 hour. I don't think you can override that.
540722
Sounds like you got a bad battery. Mine goes on for about 2 hours. 20 minutes is unacceptable. As for a new one
1086908
That sounds like a defect in the unit. Mine stays on about 5 seconds, then turns off. There isn't a button that I know of to be able to turn it off. I'd write to the seller and ask for a replacement. That isn't normal.
2039916
Yes, it turns off on its own after 20-30min of inactivity.It's a great machine for quite a variety of settings & I recommend it.
1101489
It goes off for a few seconds, then stops. You can also hit a button on top to stop it.
520370
You have to preset times you want something to turn on or off.Won't turn on automatically in 24 hours if someone shuts off.
1947157
I have had that same problem myself. I found out that it goes off for about an hour.
747392
Yes, this turns off automatically after the selected amount of time chosen, (15, 30, 45, and 60 minutes) has expired.
421041
goto your settings, and check to see if you have automatic timer....turn off
1761779
It times out at about 60 seconds, but it's easy to restart afterwards. I hope that helps. I didn't get the second question.
869790
Not that I've ever noticed. It automatically turns off after a minute or two, so there really isn't enough time to "warm up" even if it might have done it with more time.
1968166
There is an on-off switch on the side. It will also turn itself off automatically after a few minutes.
351592
I put a 20 amp switch ahead of the unit to turn it off. It works as a "kill switch". I know of no other way of solving your problem...
1151096
mine does not turn off till I turn it off, contact the manufacture for help
2102899
You have to set it back to 0.0 and I'm not exactly sure but it's either 5 or 10 minutes of no use it shuts itself off
2214108
Yes, it turns off after one minute or five minutes, depending and you selection.