LG TV Power Supply Boards – Original SMPS & PSU Boards
The Power Supply Board, also known as SMPS Board or PSU Board, is one of the most important electronic boards inside an LG television. It converts incoming AC electricity into multiple regulated DC voltages required by different TV circuits.
Without a functioning power supply board, the television cannot operate correctly. Even if the motherboard, display panel and other components are working, a faulty power board can prevent startup or cause unstable operation.
⚡ LG TV Power Distribution Flow
AC Power Input➡️Power Supply Board➡️Motherboard➡️T-Con / LED Driver➡️Display System
What Is An LG TV Power Supply Board?
An LG TV Power Supply Board converts AC mains voltage into multiple regulated DC voltages required for motherboard operation, display processing and backlight power circuits.
Common Names
- LG Power Supply Board
- LG SMPS Board
- LG PSU Board
- LG Power Module
- LG Power PCB
- LG Switching Power Supply Board
Common Power Supply Board Symptoms
⚫ TV Completely DeadNo power and no standby indication.
🔴 Standby Light IssuesStandby light blinking or behaving abnormally.
🔁 TV RestartingTV repeatedly restarts or shuts down.
🔊 Clicking SoundRelay clicking but TV not starting.
⚡ Intermittent PowerTV powers on and off unexpectedly.
📺 No StartupTV refuses to boot despite receiving power.
Power Supply Board vs Motherboard
⚡ Power Supply Board
- Converts AC to DC voltages
- Powers all internal circuits
- Controls startup power sequence
- Supports backlight power system
🧠 Motherboard
- Runs Smart TV software
- Processes audio and video
- Controls HDMI and Wi-fi
- Manages TV functions
Common LG TV Faults Solved By Power Supply Replacement
⚫ LG TV Dead
🔴 Standby Light Blinking
🔁 LG TV Restarting
🔊 Clicking Noise
⚡ Power Failure
📺 TV Not Starting
How To Match The Correct LG Power Supply Board
- LG TV model number
- Power supply board number
- SMPS board sticker number
- Connector layout
- Original board photo
- TV fault description
Customers Also Search For
- LG TV Motherboards
- LG TV T-Con Boards
- LG TV LED Driver Boards
- LG TV LED Backlights
- LG TV LVDS Cables
- LG TV FFC Cables
- LG TV Wi-fi Modules
Need Help Finding An LG Power Supply Board?
If you are not sure which LG power supply board is suitable, send us the following details before ordering:
- LG TV model number
- Power board photo
- Board number photo
- Connector side photo
- Fault description or short video
Our team can help verify compatibility wherever possible.
Frequently Asked Questions
What does an LG TV power supply board do?
It converts AC electricity into regulated DC voltages required by all TV circuits.
Can a faulty power supply board make a TV completely dead?
Yes. Complete power loss is one of the most common power board symptoms.
Are LG power supply boards universal?
No. Power supply boards are model-specific and should be matched carefully.
Can a bad power supply cause TV restarting?
Yes. Unstable voltages can cause continuous restarting and shutdown problems.
How do I identify the correct LG power board?
Match the board number, TV model number and original board photo before ordering.
