Question about Samsung Televison & Video
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Posted on Jan 02, 2017
Here is how you fix this:
Go to menu--> setup --> reset
This will reset your TV to factory settings. The Demo Mode will cease.
Posted on May 07, 2010
Did you have any luck? My LG is stuck in demo mode too. Menu button doesn't work, and keylock was on as default so I can't use the buttons on the TV itself.
Posted on Nov 30, 2009
I concur with Lightnbaby.... had same problem... my TV LNT4042HX/XAA took 10 min to start sometimes... the capacitors on the power supply board had bubbles on top 4 of them all 10/1000Uf. Samsung wanted to charge $220+ to have a guy come out and fix. J&J parts (samsung vendor) wanted $108 for a new board. I replaced the 4 capacitors for $4.68 and the TV works fine now!!!!!
Posted on Mar 29, 2010
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