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Re: TV turns on and changes channels on its own
Keeps changing channel
Check voltage on D12 if below 4.8V then change
Changes channel or volume adjusts by itself
Check S900/1/2 on pcb H1, alternatively this could be due to failure of IC005 (CD4052BCM-FL63) on pcb A
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Is the tv new or has it started to do this recently ?
Try to eliminate the obvious.
Does the remote continue to flash when you release all of the buttons? Is it a stuck button ?
If you cant' see the remote output, try using your smartphone camera. Most phone cameras will capture infrared light ( invisible to the eye). Aim the remote at the camera and see if you can see the flashing light, which is data being sent to the tv. When you release the buttons does the flashing stop ? If so remote is ok
Next turn all of the lights off in the room with the tv. Also turn off any lights that may shine in from other rooms. Try using the remote
If your tv functions normally, you may be getting interference from your lighting. Some LED and CFC fluorescent lights flicker at a rate which may be close to the remote IR output frequency.
If turning off the lights fixes the issue, turn on each light to isolate the issue. Replace the bulbs with ones from different manufacturers.
I'll assume that you work in a hotel. Do you guys feed a cable signal as is straight to each guest room or do you have you own system (i.e. separate receivers for each channel that are then combined into one trunk)? Do you guys offer a movie purchase option or allow guest to checkout through the TV? What system you guys use would determine what you'll need aside from the screen itself. These things should've been worked out before investing so much money on new TVs.
Is it a multi-function remote? If it is, make sure you've punched the TV button before using it. Also, make sure none of the buttons on the remote or the TV have accidentally been pushed down and are stuck.
Thanks for using FixYa. The TV
will automatically turn itself off after approximately 15minutes if it is tuned
to a vacant channel or a station that completes its broadcast for the day. This
feature does not work in VIDEO mode. If the power is cut off while you are viewing the TV,
the last mode memory feature will turn the TV on
automatically when the power is re supplied. If the power is going
to be off for a long time or you are going to be away from your TV,
unplug the power cord to prevent the TV from turning on in your
absence. You’ll also need to check the swollen/bulged capacitors
on the power supply board inside the TV. The TV itself turned it off in the
case of any bad capacitors or overheating with the help of built-in sensors. You’ll
need to replace the swollen/bulged capacitors. Please also check the power from
and to the TV.
Please do rate the solution and
revert for further assistance.
That remote has to work / it is a direct tv issue since it is their equipment that you are renting and it is supposed to work with your set..
Did you make sure that the batteries in the remote are good? that the remote unit itself is good ( Use digital camera or am radio to test out - see google)
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.
your system control section has failed due to sudden power failure.
1please check power to system cotrol.
2check tunning &aft ckt in system.
3check memory ic & its section
4check system ic & its section