The television turns on and off by itself once we turn it on initially. How can we fix this?

On remote Press SMART (with house symbol)
go to
settings then
option then
mode setting then select
home use

(and, if you're feeling really brave, but it's not necessary to do this to remove demo mode
to return to initial settings
SMART
Settings
OPTION
Initial Setting
Deletes all optional settings and returns to initial default mode.
Once initialization is complete, the TV will turn off and on by itself.
If Lock System is activated, a pop-up password prompt will appear.
Do not turn off the power during initialization)

You missed the word demo, why repost?
On remote Press SMART (with house symbol)
go to
settings then
option then
mode setting then select
home use

(and, if you're feeling really brave, but it's not necessary to do this to remove demo mode
to return to initial settings
SMART
Settings
OPTION
Initial Setting
Deletes all optional settings and returns to initial default mode.
Once initialization is complete, the TV will turn off and on by itself.
If Lock System is activated, a pop-up password prompt will appear.
Do not turn off the power during initialization)

I have a Sony Bravia. Smart Television that would not turn on once in standby mode. The Red light would blink twice. I unplugged the television and reconnected it using a surge protector power supply strip. This solved my issue. From now on I'll be sure to turn the television off instead of allowing it to turn itself off.

How can I fix a lg840g tracfone that has red block beside battery terminal a rep is telling me means it is no longer operable?

Hello,

It is very certain that the lamp is having a leakage that is why it takes time to get it to come on.

Replacing the lamp is the solution to the problem, replacing the lamp is quite simple, but you have to be cautious in order to avoid shock and other kind of damages in the unit.

To replace the lamp, you need to unplug the television for about an hour or 2, so the high voltage in it will dissipate, then you get the appropriate screwdriver to unscrew the screws that are around the television, then you will see the lamp, it looks like a kind of bulb. Some of them have their lamp in front by the lower side of the control panel of the television.

So when you get a replacement lamp, all you have to do is to remove the old lamp and place the new one in it. then reassemble the television back together and it will be in good condition once again.

Take note, that you should be able to spend on any of your accessories irrespective of the amount of years it might have lasted. That will only show you care for your accessories. It is better fixing a old one that has worked perfectly fine for years that to get a new one that is still likely to develop faults anytime.

Take care and good luck

This could be the power supply problem, or the main board. You need technician to fine out what is going on.

I think the timer setting in your TV is broken. Try fixing this.

the problem is there is engaged button there..only technician can do the job by replacing the button that is always engage.

1. Initialize settings by pressing "menu, 1, 2, 3, enter" after settings have been initialized press the system reset button on the front once the LED stops blinking, reprogram the tuner settings

This is probably a short in the TV, most likely a ground problem.,, make a proper ground (earth) for the the TV.
that will Fix your problem.