The channels keep changing themselves- the channels roll up non stop
Do a reset to this TV, and then check. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
SOURCE: changes channel by its self it goes crazy
You have ONE of two possibilities....on the Front panel buttons, you MIGHT have a stuck button or leaky button....
I suspect that if ALL it does is change channels...it would be a channel UP or DOWN button stuck....yes, it can fire up the tv too....But it will dedicate itself to doing only ONE function.
IF you have multiple operations, like changing channels, menu appearing, volume changing....then the MOST likely problem is actually the microprocessor causing the problem....BUT it is STILL possible to have SEVERAL buttons stuck....rare, but possible.
And unfortunately unplugging it won't even help in any of these possibilities....
You have to start with pressing each and every button one at a time and see if the problem stops afterwards....
IF it doesn't, then the next step is to measure the resistance across each button....they should read Infinite ohms.
If any measure lower, the button should be removed and see if the TV acts normally...
IF the buttons are located on a separate board with a plug that can be disconnected, you can just disconnect that while it's acting up and see if the problem disappears.....
If it still misbehaves after this, you NEED to get it to a TV tech for further analysis with a scope.....
SOURCE: AOC Plasma TV turns on by itself and changes channels non stop.
I have an AOC 32" LCD HDTV and it turns on by itself as well. Tuning is done via my cable box, so the tv is set on HDMI and I don't have the channel changing issue. I as well am trying to figure it out. The only thing I could suggest is perhaps the remote batteries are low and triggering on it's own. Try changing the batteries, or ensure that the remove it in a drawer or other room so that triggering the unit is impossible. Hope that helps.
SOURCE: 47LG50 UG flat panel tv
Tries tv unplug,replug it back like about an hour.The tv now,will be resetting itself back to the factory setting.The tv now,should be working right again.Not, if it have the same problems,than the tv Tuner signal board have internal shorting problems.That the board,where the incomming broadcasting signal cable plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv Tuner signal board for the replacement.
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