TV screen is black but the TV is on: how to find the cause

If your TV turns on but the screen stays black, press Home, Menu or a volume button on the remote. If the TV's own menu or volume bar appears, the screen and its backlight are working. The problem is the picture coming in: the wrong input, a loose HDMI cable, or the streaming stick, console or cable box.

If nothing appears but you can hear sound, shine a flashlight at the screen. On most TVs that aren't OLED, a faint picture under the light means the backlight has stopped working. No picture at all points to a power or board fault. Neither check needs tools or means opening the TV.

It's also worth checking when you bought the TV. If it's still within the store's return window or the manufacturer's warranty, a hardware fault should be the store's or the manufacturer's problem to fix.

Does the TV show its own menu?

This one check splits a black screen into two very different problems. The TV draws its own menu and volume bar without help from any outside device, so if those appear, the screen is fine. Samsung's support guide uses the same test: if the menu shows completely, the TV doesn't need service. LG suggests pressing volume, and Vizio suggests pressing Menu.

Check whether the screen was turned off on purpose

Many TVs have a setting that turns the screen off while sound keeps playing. It's meant for listening to music or saving power, but it looks exactly like a broken screen, so rule it out first whenever you can hear sound.

Settings that blank the screen while sound plays

• Roku TV (TCL, Hisense, Onn and other Roku TVs): press the Star button, open Options and look for Picture off. Roku's guide says to press OK to bring the picture back.
• LG: the Screen Off option in Energy Saving turns the screen off. LG says to press any button except power or volume to turn it back on.
• Samsung: Picture Off is an accessibility setting that turns the screen off and keeps the sound. It's under Settings, General (or General & Privacy), Accessibility, and you can also reach it by pressing and holding Mute. Samsung's accessibility guide covers it.
• Hisense Google TV: Picture Off is under Settings, System, Power & Energy, Power. The Hisense manual says to press any button except power, volume or mute to bring the picture back.
• Vizio: some models have a Blank Screen option under Menu, System, Timers. Vizio's manual says any button except volume or mute turns the picture back on.

An LG OLED running its Pixel Refresher

LG OLED TVs run a Pixel Refresher cycle to keep the picture even, and it takes about an hour or more. If you start it from the menu, the screen turns off while it runs, which can look like a fault. Give it time before assuming the worst. LG's guide notes that it also runs on its own after the TV is switched off, and turning the TV back on stops it.

If the menu appears: fix the signal

When the TV can show its own menu, the screen is fine. The next step is to work out whether the input, the cable, the HDMI port or the device you're watching is at fault.

Wrong input or source

Press Input or Source and step through each HDMI input slowly. Roku's black-screen guide suggests pausing about 10 seconds on each one, because some devices take a moment to send a picture.

HDMI cable and port

• Unplug the HDMI cable at both ends and plug it back in firmly.
• Move it to a different HDMI port on the TV, then select that input.
• Try a cable you know works. Samsung TVs can test the cable themselves: Settings, Support, Device Care, Self Diagnosis, Signal Information, then HDMI Cable Test.
• For 4K at 120Hz from a PS5, Xbox or PC, use a cable with the Ultra High Speed HDMI certification label.

Black screen from a streaming stick, console or cable box

If only one device shows black, such as a Fire TV Stick, Apple TV, Chromecast, Roku player, game console or cable box, the TV is probably fine. Unplug that device from power for a minute, then try it on another HDMI port, or on another TV if you have one. As Samsung puts it, if the device shows a picture in another setup, the TV isn't the cause.

4K, HDR and enhanced HDMI settings

A 4K or HDR device only works if the HDMI port it's plugged into supports the same features. If a 4K device shows black while your other devices work:

• Try a different HDMI port. On some TVs, only certain ports support the copy protection 4K devices use (HDCP 2.2). Sony also suggests connecting the device straight to the TV if an older AV receiver sits in between.
• On LG TVs, turn ULTRA HD Deep Colour off for that port, or move the device to a port that supports it, as LG's guide describes. Samsung calls a similar setting Input Signal Plus.
• Lower the device's own video output (for example, from 4K 120Hz to 4K 60Hz) and see if the picture returns.

If nothing appears: the flashlight test

Use this test when the TV makes sound or shows a standby light but the menu never appears. It works on LED TVs, which are LCD TVs lit from behind by LEDs. It doesn't apply to OLED TVs, which are covered below.

How to do the flashlight test

1. Turn the TV on and play something with sound, or wait until you'd normally see the home screen.
2. Darken the room if you can.
3. Hold a bright flashlight (a phone flashlight works) close to the screen, at a slight angle.
4. Move the light across several areas of the screen and look for faint shapes, menus or moving images.

iFixit's troubleshooting guide uses the same check.

What a faint image under the flashlight means

If you can see a dim picture, the TV is creating the image but nothing is lighting it from behind. That suggests the LED backlight has failed. The backlight is made of strips of small LEDs, and according to iFixit, when one LED fails, the whole backlight usually stops working. Heat is a leading cause.

Backlight failure is not unusual. In RTINGS' long-term test of about 100 TVs, run from November 2022 to September 2025, backlight issues were by far the most common failure: 34% of the LED TVs tested had at least one failed LED. That test runs TVs much harder than a normal home does, so it shows which failures are typical, not how likely your TV is to fail.

What it means if you see nothing under the flashlight

If there's no image at all, the cause can be the power supply board, the T-con board (which drives the screen) or the main board, as iFixit explains. The flashlight test can't tell which one. A repair technician or the manufacturer's support team will want to know what else you've noticed, such as whether there's sound and what the standby light is doing.

OLED TVs

OLED TVs don't have a backlight. Each pixel makes its own light, so a flashlight won't reveal anything useful. On an OLED TV, rely on the menu check, the brand's built-in picture test and the manufacturer's support team.

Restart, test and reset steps by TV brand

Each brand publishes its own black-screen steps, and they don't match. The table shows what each brand says to do when the screen gives you nothing to navigate, and the notes below cover each brand's built-in picture test. Unplugging means pulling the plug from the wall, not just pressing power.

A factory reset erases your apps, logins and settings, and it can't fix a failed backlight or board. Save it for last, after the menu and flashlight checks point to a software problem.

Roku TVs (TCL, Hisense, Onn and others)

Plug the TV straight into a wall outlet instead of a power strip. If the outlet has Test and Reset buttons (a GFCI outlet), press Reset. If the screen stays black, Roku's guide uses the recessed reset button on the back or bottom of the TV: hold it with a paper clip for about 12 seconds until the status light glows dimly. TVs without the button reset by holding the power button for about 10 seconds.

Samsung

Press Home first. If the menu appears, check the source and cables, then run the picture test from Settings, Support, Device Care, Self Diagnosis, Picture Test (some models skip the Device Care step). If the test picture looks normal, the TV is fine and the source is the problem. On TVs with a One Connect box, Samsung says to disconnect the box: if a picture appears, the box needs replacing. Paths vary by year, so check Samsung's Self Diagnosis guide if yours looks different.

LG

Press a volume button. If the volume bar appears, the TV is working and the signal is the problem. If it never appears, LG says the TV needs service. To run LG's Screen Self-Diagnosis, go to All Settings, Support on 2021 and newer TVs. On 2020 models it's under Support, Additional Settings, Picture Test, and on older models under Picture, Picture Test.

TCL (Google TV)

TCL suggests unplugging the TV and any connected device for 60 seconds. If you need a factory reset and can't see the menu, TCL's Recovery Mode steps are: unplug the TV for about 30 seconds, hold the TV's power button while plugging it back in until Recovery Mode appears, then choose Wipe Data/Factory Reset and Reboot System Now. If Recovery Mode doesn't appear, leave it unplugged for 5 to 10 minutes and try again. TCL Roku TVs follow the Roku steps above.

Vizio

Unplug the TV for at least 5 seconds, then press Menu. If the menu appears, check the input, the cable and the device you're watching. Vizio's support guide says that sound with no logo, menu or picture on any input points to a display or backlight fault that needs service. A factory reset uses the Power/Input button on the TV itself, held for 20 seconds on some models and 12 seconds on newer ones, so check your manual first.

Hisense

Unplug the TV and plug it back in after 60 seconds. On VIDAA models, the Hisense manual describes a Picture Test under Settings, Support, Self Diagnosis. A normal test picture means the TV is fine and the source or cable is the problem. On Hisense Google TV models, make sure Picture Off isn't turned on.

Sony

If the power light blinks red, count how many times it flashes. Sony's help guide says the pattern repeats every three seconds. Unplug the TV for two minutes, plug it back in, and if the blinking continues, give Sony support the number of blinks. Sony doesn't publish what each number means, so don't rely on code lists from other sites.

Amazon Fire TV models (Insignia, Toshiba and Fire TV Omni)

Check the input and reseat the HDMI cables first. Amazon's guide says to restart the TV by holding Select and Play/Pause on the remote together for 3 to 5 seconds, or by unplugging it for at least 30 seconds. A factory reset uses Back and Right held together for 10 seconds.

Half the TV screen is black or dark

When only part of the screen goes dark, where the dark area sits is a useful clue. On edge-lit TVs, where the LEDs run along one or two edges, a failing backlight often shows up as a dark half. According to iFixit, a T-con board fault usually affects the whole screen, while some main board faults show up on only part of it. Shine the flashlight on the dark half: a faint image there points to the backlight.

Problems that look like a black screen

• A very dim picture you can still see: usually Energy Saving or a brightness setting, sometimes a weak backlight. Check the picture and power settings first.
• Black spots or blotches on part of the screen: often damage under the glass. Start with our guide to dark spots on a screen.
• Vertical or horizontal lines: a connection or screen fault. See the guide to screen lines.
• Uneven glow along the edges on dark scenes: backlight bleed. Once the picture is back, the backlight bleed test shows how uneven it is.
• A faint image that stays on screen: image retention or burn-in. The burn-in test helps you tell which.
• The picture flickers or flashes before going dark: often a setting, cable or backlight problem. See our guide to a flickering TV screen.

Mistakes that can make a black TV screen worse

• Don't take the back off. iFixit warns that the power supply board has exposed high-voltage areas, so opening the TV risks a shock as well as more damage.
• Skip the "tape method" and similar video fixes that involve opening the TV and taping over parts of a board. They can cause more damage, and damage you cause yourself usually isn't covered by the warranty.
• Don't press on the screen to see whether the picture comes back. Pressure can damage the layers behind the glass.
• Anchor the TV if you move it to reach the cables or ports. According to the CPSC, TV and furniture tip-overs send about 17,800 people to the emergency room each year, and most of those killed are young children.
• Don't start with a factory reset. Write down your settings and make sure you know your streaming logins before you erase everything.

Is it worth fixing? Warranty, returns and repair costs

A black screen caused by a failed backlight or board is a hardware fault. Who pays for it depends mostly on when and where you bought the TV.

Check your return window first

If the TV is new, returning it is usually faster than a warranty repair. These return windows were checked on November 13, 2026:

• Costco: 90 days for televisions.
• Amazon: 30 days for most items. Items bought November 1 to December 31, 2026 can be returned through January 31, 2027.
• Walmart: 30 days for most electronics. Holiday purchases made October 1 to December 31 can be returned until January 31.
• Best Buy: purchases made October 30 to December 31, 2026 can be returned through January 15, 2027, or January 31 for My Best Buy Plus and Total members. At other times of year, check Best Buy's current return window.
• Target: 30 days for electronics.

Manufacturer warranty and what it covers

Most TVs sold in the US come with a one-year warranty on parts and labor, including TCL, Hisense, LG and Vizio. Commercial use is often covered for less. Some LG OLED models add panel-only coverage in years two to five, but you pay for the labor. If you bought the TV at Costco, Costco extends the manufacturer's warranty to up to 2 years.

Even without a written warranty, US law gives you an implied warranty that a product will work as it should, and in some states it lasts several years. A company also can't void your warranty just because you used an independent repair shop or another company's part, although it can still deny coverage for damage that repair caused.

Credit card extended warranty

Some credit cards extend the manufacturer's warranty if you paid with the card. Chase Sapphire cards, for example, add one year to eligible US warranties of three years or less. Coverage varies by card and changes over time, so check your card's benefit guide before you pay for a repair.

Typical repair costs

Repair prices vary by model and area. Treat these national ranges from Fixr, updated February 2026, as a rough guide rather than a quote:

Compare any quote with the price of a similar new TV. A backlight repair can make sense on a larger or higher-end TV, while replacing the screen itself rarely does.

Recycling a TV that isn't worth fixing

Look for an electronics recycler certified to R2 or e-Stewards, the certifications the EPA lists. Many states run e-waste recycling programs, often paid for by manufacturers. Some retailers, including Best Buy, also take TVs back, usually for a fee that varies by state.

What to write down before you contact support

Support agents and repair shops ask the same questions, and having the answers ready makes a warranty claim or return much faster:

• The model number and serial number, from the sticker on the back of the TV.
• When the black screen started and what happened just before, such as a power outage, a software update or moving the TV.
• Whether the menu appears, whether there's sound, and what the standby light is doing.
• What you saw in the flashlight test, ideally with a short phone video.
• Each step you've already tried.

For a fuller checklist, see our guide to documenting damage for a warranty claim.