1. Introducció
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of the Samsung TV Power Supply Board models BN44-00872A and BN44-00872B. This board is a replacement component designed to restore power functionality to compatible Samsung television sets.
2. Compatibilitat
This power supply board is compatible with various 49-inch and 55-inch Samsung TV models. Please verify the model number on your existing power supply board matches one of the following:
- BN44-00872A
- BN44-00872B
Known compatible TV models include:
- UN49K6250AFXZA
- UN55K6250AFXZA
- UE55K6500
- UE49K6500
- UE55K6300
- UE49K5500AK
It is crucial to visually inspect your original board and compare its model number and physical layout with the replacement board to ensure full compatibility before installation.
3. Advertències de seguretat
WARNING: Risk of electric shock. Always disconnect power before servicing.
- Ensure the television is unplugged from the power outlet and all external devices are disconnected before beginning any installation or repair work.
- Capacitors on the power supply board can retain a high voltage charge even after the TV is unplugged. Exercise extreme caution and allow sufficient time for discharge before handling.
- If you are not confident in performing the installation, seek assistance from a qualified technician.
- Avoid touching components unnecessarily to prevent electrostatic discharge (ESD) damage. Use an anti-static wrist strap if available.
4. Guia d'instal·lació
The following steps outline the general procedure for replacing the power supply board. Specific TV models may vary slightly.
- Prepara la televisió: Col·loqueu el televisor cara avall sobre una superfície suau i neta per evitar que es facin malbé la pantalla.
- Treure la contraportada: Unscrew and carefully remove the TV's back cover. Keep track of all screws.
- Localitza el tauler antic: Identify the existing power supply board. It is typically the largest board connected directly to the AC power inlet.
- Desconnexió de cables: Carefully disconnect all cables connected to the old power supply board. Take photos if necessary to remember connection points.
- Treure la placa antiga: Unscrew the mounting screws holding the old power supply board in place and carefully lift it out.
- Instal·lar la placa nova: Position the new power supply board (BN44-00872A or BN44-00872B) into place and secure it with the mounting screws.
- Torneu a connectar els cables: Reconnect all cables to their corresponding ports on the new board. Ensure all connections are firm and correct.
- Test (Optional but Recommended): Before replacing the back cover, temporarily plug in the TV and attempt to power it on to confirm basic functionality. If successful, unplug the TV again.
- Substituïu la coberta posterior: Torneu a col·locar amb cura la coberta posterior del televisor i fixeu-la amb tots els cargols.
- Prova final: Plug in the TV and power it on to confirm full functionality.
5. Funcionament
Once correctly installed, the power supply board operates automatically to provide the necessary voltages to all components of your Samsung TV. No user interaction or configuration is required for its operation.
6. Manteniment
The power supply board is designed for long-term, maintenance-free operation. To ensure its longevity and the overall health of your TV:
- Mantingueu el televisor en una zona ben ventilada per evitar el sobreescalfament.
- Avoid exposing the TV to excessive dust or moisture.
- Do not attempt to clean the internal components of the power supply board with liquids. Use compressed air or a soft brush if necessary, ensuring the TV is unplugged.
7. Solució De Problemes
If your TV experiences issues after replacing the power supply board, consider the following:
| Problema | Causa possible | Solució |
|---|---|---|
| TV does not power on | Loose cable connections, incorrect board installation, other faulty TV components. | Double-check all cable connections. Ensure the board is seated correctly. If the issue persists, other TV components (e.g., main board, T-con board) might be faulty. |
| Intermittent power / TV turns off randomly | Loose connections, overheating, faulty components on the board. | Verify all connections are secure. Ensure adequate ventilation for the TV. If the board itself is faulty, replacement may be necessary. |
| No hi ha imatge, però hi ha so | Backlight issue, T-con board issue, or main board issue. (Less likely to be power board if sound is present). | This symptom typically points to issues with the backlight, T-con board, or main board, not the power supply board. Further diagnosis of other components is recommended. |
Si els passos de resolució de problemes no resolen el problema, es recomana consultar un tècnic professional de reparació de televisors.
8. Especificacions
| Característica | Detall |
|---|---|
| Números de model | BN44-00872A, BN44-00872B |
| Mides de TV compatibles | 49 polzades, 55 polzades |
| Revisió de la Junta | REV1.4 (as seen on board) |
| Board Date | 16.04.29 (April 29, 2016, as seen on board) |
| Vol. De sortidatage (Standby) | STB: 7.5V |
| Vol. De sortidatage (On) | ON: 11.8V |
| Certificació | CE |
| Origen | Xina continental |
| Longitud del paquet | 28 cm |
| Amplada del paquet | 19 cm |
| Alçada del paquet | 6 cm |
| Pes del paquet | 0.6 kg |
9. Consells d'usuari
- Verifiqueu la compatibilitat amb cura: Due to variations across countries and regions, always compare photos of your existing board and its specific model numbers (e.g., BN44-00872A or BN44-00872B) with the product images and descriptions before purchasing. If unsure, provide clear photos of your board to the seller for verification.
- Desmuntatge de documents: Take pictures or videos during the disassembly process of your TV. This will serve as a valuable reference when reconnecting cables and reassembling the unit.
- Manejar amb cura: Electronic components are sensitive. Avoid excessive force when disconnecting or connecting cables and when handling the board itself.
10. Garantia i Suport
For any questions regarding the product, installation, or troubleshooting beyond the scope of this manual, please contact the seller directly. Keep your purchase records for any potential warranty claims.