Won't Turn On
LG Smart TV
Severity: CriticalWhat Does This Error Mean?
Unplug the LG TV from the wall for 60 seconds, then plug it back in. If the standby LED blinks but the screen stays black, hold the power button on the TV itself for 10 seconds. A completely dead TV with no LED at all usually means a failed power supply board.
Affected Models
- LG OLED C-series
- LG QNED series
- LG NanoCell series
- LG UHD series (UN, UP, UQ)
- LG webOS TV (all years)
Common Causes
- Power supply board failure
- Stuck standby / deep-sleep lockup
- Faulty or depleted remote batteries
- Surge damage from a power fluctuation
- Corrupted webOS firmware preventing boot
How to Fix It
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Power cycle: unplug from the wall
Leave unplugged for a full 60 seconds to drain residual power from capacitors. Do not just use the remote — physically unplug the cord.
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Try the button on the TV body
LG TVs have a joystick button or power button on the underside or back. Press and hold it for 10 seconds. If the TV turns on, the remote or IR sensor is the issue.
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Check the power outlet and cable
Plug a lamp or phone charger into the same outlet to verify it has power. Try a different power cable if you have one.
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Inspect the standby LED
A slow blinking red LED means the TV is receiving power but stuck in standby. A fast blink pattern (e.g. 2 or 3 times) is a diagnostic fault code — note the pattern and search LG support for that specific blink code.
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Factory reset via the hidden service menu (last resort)
With the TV powered off, press and hold the power button on the TV body for 10 seconds. Some LG models will boot into a reset mode. If the screen comes on, follow prompts to reset webOS.
When to Call a Professional
If the TV is completely dead after a power cycle and the power light never comes on, the internal power board likely needs replacement — contact LG support or a TV repair technician.
Frequently Asked Questions
LG TV standby light is on but screen won't turn on — what does that mean?
The power supply is working but the panel or mainboard is not responding. Try holding the power button on the TV body (not the remote) for 10 seconds to force a hard restart.
My LG OLED won't turn on after a power outage — is it broken?
Power surges can trip an internal protection circuit. Unplug the TV for 5 minutes, then plug it back in. If it still won't start, the power supply board may need inspection.
LG TV red light blinks 2 times — what does it mean?
A specific blink pattern is a hardware fault code on LG TVs. Two blinks typically indicates a power supply issue. Note the exact blink count and check the LG support site for your model number.