1. Product Overview
This document provides instructions for the installation, operation, and maintenance of the BN44-00428A BN44-00428B PD55B2_BSM power supply board. This board is a replacement component designed for specific Samsung television models to restore power functionality.
2. Safety Information
Before attempting any installation or repair, please read and understand all safety precautions. Improper installation can lead to electric shock, fire, or damage to the equipment.
- Always disconnect the television from the main power supply before beginning any work.
- Discharge any residual power from capacitors on the old board before handling.
- Wear anti-static gloves and use an anti-static wrist strap to prevent electrostatic discharge (ESD) damage to sensitive electronic components.
- Only qualified technicians should attempt installation or repair.
3. Setup and Installation
This power supply board is intended as a direct replacement part. Ensure the TV model and the part number match before proceeding.
3.1 Pre-Installation Checks
- Verify the part number on your existing power supply board matches BN44-00428A, BN44-00428B, or PD55B2_BSM.
- Inspect the new board for any visible damage during shipping.
3.2 Installation Steps
- Disconnect Power: Unplug the TV from the wall outlet.
- Access TV Internals: Carefully remove the back cover of the television. Refer to your TV's service manual for specific instructions on opening the casing.
- Locate Old Board: Identify the existing power supply board. It is typically a large board with many connectors and often has large capacitors and transformers.
- Disconnect Cables: Disconnect all cables and ribbon connectors from the old power supply board. Take photos or make notes of the connections for reassembly.
- Remove Old Board: Unscrew the mounting screws securing the old power supply board to the TV chassis. Carefully lift and remove the old board.
- Install New Board: Place the new BN44-00428A/B PD55B2_BSM board into position, aligning it with the mounting holes. Secure it with the screws previously removed.
- Reconnect Cables: Reconnect all cables and ribbon connectors to the new board, ensuring they are firmly seated. Double-check all connections against your notes or photos.
- Close TV Casing: Replace the back cover of the television, ensuring all screws are tightened.
- Test: Plug the TV back into the power outlet and attempt to power it on.
4. Operation
The power supply board operates automatically as an integral part of your television. Once correctly installed, it will provide the necessary power to the TV's components when the TV is turned on. There are no user-adjustable settings or direct operational controls on the power supply board itself.
5. Maintenance
The power supply board requires minimal maintenance. To ensure longevity and proper function:
- Keep the television in a well-ventilated area to prevent overheating.
- Avoid exposing the TV to excessive dust, moisture, or extreme temperatures.
- If the TV internals are accessed for other repairs, gently clean any dust accumulation on the board using compressed air or a soft brush. Ensure the TV is unplugged before cleaning.
6. Troubleshooting
If your television experiences issues after installing the new power supply board, consider the following troubleshooting steps:
- No Power: Double-check all cable connections to ensure they are secure and correctly oriented. Verify the TV is plugged into a working power outlet.
- Intermittent Power: This could indicate a loose connection or a fault with another component. Re-check connections.
- Visual Inspection: With the power disconnected, visually inspect the board for any signs of burnt components, bulging capacitors, or loose solder joints.
- Professional Diagnosis: If issues persist, it is recommended to seek assistance from a professional electronics repair technician.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | BN44-00428, BN44-00428A, BN44-00428B, PD55B2_BSM |
| Compatible Equipment Style | Display Equipment (Samsung UA55D8000, UN55D6400UF, UE55D7000LS, UE55D8000YU) |
| Origin | Mainland China |
| Certification | CE |
| Input Voltage | AC 100-240V~ |
| Input Frequency | 50/60Hz |
| Input Current | 3.5A |
| Output 1 (B5V) | 5.3V / 0.32A or 5.3V / 3.8A |
| Output 2 (B13V) | 12.8V / 4.24A |
| Output 3 (Vamp) | 12.8V / 0.29A or 12.8V / 0.35A |
| Output 4 (LED Driver) | 176V / 560mA or 197V / 560mA |
8. User Tips
No specific user tips were available from provided reviews or Q&A data for this product.
9. Warranty and Support
For warranty information, returns, or technical support regarding this power supply board, please contact the seller (TJYZDZKJ Store) directly through your purchase platform. Ensure you retain your proof of purchase for any warranty claims.