To fix a Samsung TV that won’t turn on with no red light, secure its power cable, unplug it for 30 seconds, then connect it directly to a working wall outlet. If the light stays off, check for an on-screen response using the TV’s physical controls. A response means the TV is already on, so follow the picture and input checks instead.
The short version
- Start with power: Check the cable connection and test the outlet with a lamp.
- Reconnect directly: Unplug the TV for 30 seconds, then reconnect it to a working wall outlet without the surge protector.
- Check for a picture response: Press a TV-mounted button other than Power to establish whether the TV is already on.
- Follow the right branch: Remote, input and wireless connection checks depend on the TV having power.
- Know when to stop: Arrange service if the TV remains unresponsive after the power checks.
| Check | When it applies | Action |
|---|---|---|
| Power cable | Standby light is off | Secure the power connection |
| Power cycle | No standby light or a blinking light | Unplug for 30 seconds |
| Wall outlet | No standby light or a blinking light | Test with a lamp and bypass the surge protector |
| TV controls | No red light | Check for an on-screen response |
| Physical power control | Red standby light returns | Compare remote and TV-mounted controls |
| Input selection | TV has power but a black screen | Display menus and select the connected input |
| External connections | External video is missing | Reconnect cables and restart the source device |
| HDMI diagnostic | Responsive model offering the test, with a cable under six feet | Run the cable test |
| Wired One Connect cable | TV uses wired One Connect | Reseat and inspect the cable |
| Wired One Connect isolation | Wired One Connect TV has its own wall power cord | Disconnect the box and check the screen |
| Remote cold boot | Samsung Smart TV is already on | Hold remote Power until it restarts |
| Conventional remote batteries | TV works through its own controls | Reset the remote and replace exhausted batteries |
| Solar remote pairing | Powered Samsung TV from 2021 onward supplied with a solar remote | Reset the remote and restore pairing |
| Remote infrared output | TV itself can operate | Check output through a camera |
| Wireless One Connect power | Wireless One Connect system | Check both power supplies and wake the box |
| Wireless One Connect pairing | Compatible system with a working display | Pair the box through TV settings |
| Wireless placement and diagnostics | QN990FW or LS03FW with a working screen | Check placement and run diagnostics |
| Wireless box indicator | QN990FW or LS03FW with a working screen | Check LED Indication |
| OLED power advisory | 2024 Samsung OLED TV | Check power and arrange service if symptoms persist |
| Professional repair | Power checks fail | Request Samsung service |
Check the power cable and wall outlet
Check that the power cable is securely connected, following your model’s power-connection arrangement. For a 2024 Samsung OLED TV, check the AC cable connection at both the TV and the outlet.
Test another outlet with a lamp to establish that it works. Connect the TV directly to that working outlet, bypassing the surge protector. If a steady red standby light returns, that points to the original power source.
Unplug the TV for 30 seconds
Disconnect the TV from power and wait 30 seconds before reconnecting it to the working outlet. This is the unplugging method used to restart a Samsung TV. Check whether the standby light returns and whether the TV responds.
Once the red light returns, press Power on the remote, then try the TV’s physical Power button if needed. You can turn on without a remote using the TV-mounted control. If only that control works, move to the remote checks below.
The outlet test and 30-second unplug also apply when you need to troubleshoot a flashing red light. If the TV remains unresponsive after those checks, arrange service.
Check whether the TV is on with a black screen
Press a TV-mounted button other than Power and watch for an on-screen response. If something appears, the TV is already on. For a model with a single button, consult its manual for the correct control operation.
On a powered TV with a black screen, press Home or Menu on the remote. If the menu appears, select the input connected to your external device, such as HDMI 1, and turn that device on. These are the first checks to restore a Samsung TV picture when the display has power.
If external video is still missing, reconnect each signal cable at both ends, working through the cables individually. Replace damaged cables and restart the external device. Then try another device, input port or cable to narrow down the connection problem.
On responsive models offering the HDMI diagnostic, you can run a test intended for cables under six feet. Select the affected HDMI input, then open Settings > Support > Device Care > Self Diagnosis. Select HDMI Troubleshooting, which Samsung lists for 2022 and later TVs, choose the HDMI connection and follow the on-screen instructions, or select Signal Information > HDMI Cable Test and run it. If your model does not offer that diagnostic, use the cable, port and device comparisons instead.
Check the remote once the TV responds
Focus on the remote only after the TV’s own controls establish that the TV works. For a conventional battery-powered remote, the following procedure resets the remote. Remove the batteries, then hold Power for eight seconds. Reinsert the batteries and retry, replacing exhausted batteries if needed.
For a Samsung TV from 2021 onward supplied with a solar remote, the following procedure resets the remote before you restore its pairing. Hold Return + Enter for 10 seconds. Then stand within one foot of the powered TV. To pair your Samsung TV remote, hold Return + Play/Pause for at least five seconds or until the connection message appears.
Check a wired One Connect connection
If your model uses a wired One Connect box or Invisible Cable, reseat the One Connect cable at both ends. Check for damage, kinks or pinching, and replace the cable if you find any of those conditions.
Only isolate the box if your TV has a separate power cord running from the TV to the wall. Disconnect the box and check whether the powered screen displays a message or picture. If it does, Samsung directs you to replace the box; if it does not, request service.
Skip that isolation test when the TV does not have its own separate wall power cord. Follow the cable checks for your arrangement, then request service if the TV remains unresponsive.
Check Wireless One Connect power and pairing
For a Wireless One Connect system, connect the TV and the box to separate power supplies. Use the box’s supplied Type-C adapter and cable, then press PAIR once to turn the box on. Pressing PAIR or reconnecting its power also wakes it from its power-saving state.
The Wireless One Connect indicator is separate from the TV’s red standby light. Pairing and on-screen diagnostics require a powered, responsive TV display, so use the power checks first if the TV still will not respond.
With the display working, hold the box’s PAIR button for three seconds. On the TV, open Home > Settings > All Settings > Connections > Wireless One Connect > Set up Wireless One Connect. Complete setup to restore the connection.
The optional factory reset resets the Wireless One Connect box, not your TV. To perform it, hold PAIR for 10 seconds. Then set up the box again using the TV’s Set up Wireless One Connect option.
For the QN990FW and LS03FW, Samsung’s placement instructions call for the box to be in the same room within 10 meters, avoiding barriers and enclosed cabinets. With the TV screen working, open Home > Settings > All Settings > Support > Device Care > Self Diagnosis > Wireless One Connect to check the connection.
Arrange service if the TV still will not respond
If the TV remains unresponsive after checking its power connection, unplugging it for 30 seconds and trying a working outlet, arrange professional service. For a U.S. TV, open Samsung Repair Services and select Request a repair. Have the model and serial number ready; service availability depends on the product and your location.
Samsung also has specific no-power instructions for 2024 OLED TVs. After securing the AC cable and trying another outlet, test any power strip or extension with another device, then press Power on the Smart remote and observe the TV indicator. Arrange service if the indicator stays dark, the TV fails to respond or it responds without showing a picture.
Frequently Asked Questions
Should you hold the remote power button to restart the TV?
You can cold boot a Samsung Smart TV once it is powered on. Hold the remote’s Power button continuously until the TV switches off and restarts. Alternatively, unplug it for 30 seconds, reconnect it and turn it on. A remote cold boot is not a remedy for missing electrical power.
How can you check whether the remote is sending an infrared signal?
After establishing that the TV itself can operate, aim the remote at a phone or digital camera. Hold Power while watching the camera display for infrared light. If none appears, replace the batteries with fresh ones, or let a solar remote charge for a while, and try again; replace the remote if it still fails.
Why is the Wireless One Connect box indicator off while the TV works?
On the QN990FW and LS03FW, the box’s indicator operation can be disabled. Open Home > Settings > All Settings > Connections > Wireless One Connect > LED Indication and enable it if disabled. That setting controls the box indicator, not the TV’s red standby light.
Could a power board cause this on a 2024 Samsung OLED TV?
Samsung identifies a possible SMPS or power-board issue in its 2024 OLED no-power advisory. The advisory does not list affected model numbers. If your power checks fail, arrange service for diagnosis.
What other Samsung support options can you use in the United States?
From Samsung Repair Services, select Find a Service Center or select Contact Us as an alternative to requesting a repair there. You can also seek support through the Samsung Members app. Availability depends on your product and location.