The Samsung BN44-01137A is a vital internal component, specifically a Power Supply Unit (PSU), designed for modern Samsung LED televisions. It serves as the primary energy regulator, converting high-voltage alternating current (AC) from your wall outlet into the stable direct current (DC) required to power the TV’s motherboard and the backlight system.
Technical Specifications
While specific electrical tolerances can vary slightly based on the production batch, the BN44-01137A typically adheres to the following standards:
- Input Voltage: 100V – 240V ~ 50/60Hz (Universal AC input).
- Secondary Outputs: Typically provides a 13V rail for the main logic board and varying high-voltage DC outputs for the LED backlight strings.
- Connectors: Includes a dedicated power input socket and specialized pin-out headers for the Main Board and the LED Panel connection.
Compatible TV Models
The BN44-01137A is most commonly found in Samsung’s TU7000 and TU8000 Crystal UHD series. It is specifically engineered for 55-inch displays. Compatible model numbers often include:
- UN55TU7000FXZA
- UN55TU8000FXZA
- UN55TU8200FXZA
- UN55TU700DFXZA
- UE55TU7100 / UE55TU8000 (European variants)
Note: Always verify the “BN44” part number on your original board before purchasing a replacement, as Samsung may use different power boards for the same TV model depending on the manufacturing region or panel type.
When Should You Replace the Power Board?
The power supply is one of the most stressed components in a television. You should consider a replacement if you encounter the following symptoms:
- No Power (Dead TV): If the television fails to turn on and the standby light (usually red) is not illuminated, the power board has likely suffered a catastrophic failure, such as a blown fuse or a shorted capacitor.
- The “Click of Death”: If you hear a repetitive clicking sound when attempting to turn the TV on, it indicates that the PSU is stuck in a reboot loop, failing to stabilize the voltage required to boot the system.
- Backlight Issues: If the TV has sound and you can see a faint image when shining a flashlight on the screen, but the display remains dark, the LED driver section of the BN44-01137A may be faulty.
- Intermittent Shut-offs: If the TV works for a few minutes and then abruptly turns off, heat-sensitive components (like failing electrolytic capacitors) on the board are likely the culprit.