Your Shop TV Keeps Turning Itself Off: How to Keep a Screen On All Day in Malaysia

Guide · 8 min read · 2026-09-02

Almost every TV sold in Malaysia switches itself off after four hours if nobody touches the remote, and that setting is on from the factory. Here are the five settings that make a shop screen stay on, the honest RM cost of leaving a TV running all day, and why no signage software can truly switch a television off.

The screen was fine when you opened. You checked it at 11. Then a customer mentions, around 3pm, that the TV above the counter is black, and it has probably been black for a while. Nobody unplugged it. The box is still on. Press any button on the remote and the menu comes straight back like nothing happened.

This is the single most common thing that goes wrong with a shop screen in Malaysia, and it is almost never the signage, the box, the wifi or the software. It is a power saving setting that came switched on from the factory, doing exactly what it was designed to do.

Direct answer: nearly every TV sold today switches itself off after four hours with no remote button pressed. Samsung calls it Auto Power Off, LG calls it Auto Power Off under Timers, Sony and Google TV call it Idle TV standby. It is on by default.

Turn that off, turn off the separate no signal timer, turn off the screensaver on the player, and the screen will run all day. Leaving a 43 inch TV on for 12 hours a day costs about RM13 a month in electricity, so the reason to schedule it off overnight is panel life, not the bill.

The four hour rule nobody tells you about

A television assumes a human is watching it. If four hours pass with no button pressed on the remote, it decides the room is empty and shuts down to save power. That is correct behaviour in a living room and completely wrong above a counter, where the whole point is that nobody touches it.

Your content is playing perfectly. The HDMI signal is fine. The TV switches off anyway. This is why the screen so often dies mid afternoon: you turn it on at 8am, and four hours later is lunchtime.

Menu wording moves around between model years, so if you cannot find the exact path above, look for anything with the words power, energy, eco or timer in it and read every option on that page. On some LG sets the timer is two hours rather than four, which is worse.

The second timer: no signal power off

This is a different setting, and turning off the four hour one does not turn off this one. No Signal Power Off switches the TV off, or hops it to another input, when the current HDMI port goes quiet for 10 to 15 minutes.

On a normal day it never fires. It fires on the day your player reboots after a power dip, takes a few minutes to come back, and the TV gives up waiting and switches to the TV tuner.

Then the screen shows a broadcast channel over your counter until someone finds the remote. Switch it off in the same power menu.

The screensaver is usually not on the TV

If your picture is not going black but is being replaced by floating photos, a clock or a screensaver, that is coming from the player, not the television.

• Android box or Android TV. Settings, Device Preferences, Screen saver. Set the screensaver to None and "Start screen saver after" to Never. In the same menu, set "Put device to sleep" to Never. All three matter. People change the first one, miss the third, and the box still dozes off.
• Windows mini PC. Two places. Power & sleep needs Screen set to Never and Sleep set to Never on the plugged in column. Then check the screensaver separately under personalisation, because it is a different setting that Windows keeps in a different place.
• A laptop being used as the player. Also set "closing the lid does nothing", or the screen dies the moment someone tidies up.

HDMI-CEC, the setting that makes your TV do things you did not ask for

CEC lets devices control each other down the HDMI cable. Samsung calls it Anynet+, LG calls it SIMPLINK, Sony calls it Bravia Sync. It is the reason a TV sometimes changes input on its own, or switches off when something unrelated is turned off.

On a screen that has one job, turn CEC off. You lose nothing, because there is nothing else plugged in that needs to talk to it, and you remove a whole category of mystery behaviour.

Test the power cut before it tests you

Power dips are common enough in Malaysian shoplots that this is worth two minutes. Switch the TV off at the wall while it is playing, count to ten, and switch it back on. Do not touch the remote.

A screen that comes back by itself, on the right HDMI input, with your content playing, is a screen you can leave alone. A screen that comes back to standby, or to a broadcast channel, will need somebody to walk over after every power cut, and that person will not always be there.

Look for a "Power on behaviour" or "Last state" setting if your TV has one. Plenty of cheaper sets do not, and it is worth asking about before you buy the next one.

What it actually costs to leave a TV on

This is the question that stops a lot of owners from leaving the screen running, and the honest answer is that it costs much less than people expect.

The sum is simple. Watts, divided by 1,000, times hours per day, times 30, times your rate per kWh. A small shop in Malaysia pays somewhere around 50 sen per kWh once every line on the bill is added up, though the exact figure moves with your tariff and the monthly fuel adjustment.

Do not take my word for it: divide the total on your last TNB bill by the kWh printed on the same bill and you have your own real rate.

At 50 sen per kWh, running 12 hours a day, 30 days:

The real number for your set is printed on the sticker on the back, or on the energy label. Brightness matters: a screen turned up to full for a sunny shopfront can draw half again as much as the figures above.

So a 43 inch menu board and its player, running 12 hours a day, costs roughly RM14 a month. Running the same screen 24 hours a day costs about RM28. The difference is RM14, which is about one set of reprinted A3 posters. Electricity is not the reason to switch a shop screen off overnight.

Then why schedule it off at all?

Two reasons that are worth more than the RM14.

Panel life. A consumer TV is built for a few hours a day, not for round the clock duty. Running it 24 hours instead of 12 roughly doubles the hours on the panel, and the backlight is the part that fades.

If you are weighing a consumer set against a commercial one, signage display vs normal TV goes through the duty ratings and warranty differences properly.

Static images. A logo or a price panel that never moves is the thing that risks image retention, and hours of it overnight for an empty shop buys you nothing.

The honest limit: software cannot switch a television off

This is worth being straight about, because plenty of signage products imply otherwise.

An app running on a media player has no way to cut the mains power to a panel. What it can do is stop drawing anything and go black.

On a Windows player the app can also tell the display to sleep, and because that travels down the HDMI cable, most TVs will drop into standby by themselves, which is a genuine power off. On an Android box it usually cannot: the picture goes black, and whether the panel actually powers down is up to the TV.

So there are three ways to genuinely switch a shop screen off on a schedule, and only one of them is software.

For most single screen shops, the TV's own timer is the right answer and costs nothing. Software scheduling earns its place when the hours differ by day, when you have more than one screen, or when you want to change the hours without standing in front of the TV.

In Layar that is the Power Schedule, with separate on and off times per day of the week, and it is on the paid plans from RM15 a month rather than the free one. Our full cost breakdown in ringgit lays out what the rest of a setup runs to.

Common questions

Why does my TV turn off after exactly four hours?

Because of the Auto Power Off setting, which is on from the factory on nearly every brand and triggers after four hours with no remote button pressed. It does not care that content is playing. Turn it off in the power or eco menu, and turn off No Signal Power Off while you are in there.

Is it bad to leave a TV on all day?

For a normal consumer TV, running 10 to 14 hours a day is fine and is what most shop screens do. Running 24 hours a day is where the backlight starts ageing noticeably faster and where a commercial panel starts being worth the extra money. Give it an off window overnight if you can.

How much electricity does a shop TV use in Malaysia?

A 43 inch LED at about 70W, running 12 hours a day, uses roughly 25 kWh a month, which is about RM13 at a 50 sen per kWh rate. Add about RM1.50 for the media player.

Check the wattage sticker on the back of your set and divide your own TNB bill total by its kWh figure if you want the exact number for your shop.

My screen goes black but the box is still running. What is it?

Work through it in this order, which is roughly the order of likelihood: the TV's four hour Auto Power Off, the TV's No Signal Power Off, the player's screensaver, the player's own sleep setting, then HDMI-CEC. Change one at a time so you know which one it was.

Do I need a special commercial TV to run signage all day?

Not for most Malaysian shops. A consumer TV with the timers turned off and an overnight off window does the job. Buy commercial if the screen faces direct sun, needs to run close to round the clock, or is somewhere a failure would be expensive to fix.

The player comparison covers what to put behind it, and cafe and kopitiam owners can see a full scheduled day on the cafe signage page.

Go and check your TV's power menu now, before the next quiet afternoon. It takes two minutes and it fixes the problem most shop screens actually have. If your screen still goes dark after all five settings are off, tell me the TV brand and model in a comment and I will tell you what else that set does.

And if you want the screen to switch itself on and off on different hours each day, you can put your first screen up free and see whether that is worth anything to you before spending a ringgit.