Hisense Power Supply Board RSAG7.820.7748/ROH 222177 Instruction Manual

1. Informació important de seguretat

Please read all instructions carefully before attempting installation. Improper installation can lead to electric shock, fire, or damage to the television and the power supply board. This product is intended for installation by qualified technicians only.

• Desconnecteu l'alimentació: Always ensure the television is completely unplugged from the power outlet before beginning any repair work.
• Descàrrega estàtica: Wear an anti-static wrist strap and work on an anti-static mat to prevent electrostatic discharge (ESD) damage to sensitive electronic components.
• Descàrrega del condensador: Power supply boards contain large capacitors that can store high voltage even after power is disconnected. Allow sufficient time for capacitors to discharge or safely discharge them using appropriate tools.
• Substitució de fusibles: For continued protection against the risk of fire, replace fuses only with the same type and rating as specified on the board (e.g., T4.0A H 250V F801).
• Manipulació: Avoid touching components directly with bare hands. Handle the board by its edges.

2. Producte acabatview

This document provides instructions for the Hisense Power Supply Board, part number RSAG7.820.7748/ROH, also identified as 222177. This board is a critical component responsible for converting AC power from the wall outlet into various DC voltages required to operate the television's internal components, including the main board, backlight, and audio circuits.

Imatge 1: Hisense Power Supply Board RSAG7.820.7748/ROH 222177. This image displays the full power supply board, showing various components such as transformers (yellow and green), heat sinks (black finned components), capacitors (cylindrical components), and connectors. Key markings like 'HISENSE Electric Co., Ltd', 'RSAG7.820.7748/ROH', '222177', and input/output specifications are visible on the board's surface. The board also features 'HOT' and 'COLD' sections, indicating areas with different electrical potentials for safety.

Key identification markings on the board include:

• Número de peça: RSAG7.820.7748/ROH
• Secondary ID: 222177
• Fabricant: HISENSE Electric Co., Ltd
• Especificacions d'entrada: ~100V-240V, 50Hz/60Hz, MAX3A
• Especificacions de sortida: 12V/3A, 16V/1.5A, 160V/400mA

3. Compatibility and Part Verification

This power supply board is compatible with specific Hisense television models, including the Hisense 55H6E i Hisense 50R6E. However, it is crucial to verify the part number of your original power supply board before purchasing and installing this replacement.

Nota important: Television models can have multiple variations of internal components. You DEU match your original power supply board's part number (RSAG7.820.7748/ROH or 222177) exactly to ensure compatibility. Failure to do so will result in the replacement board not functioning correctly or potentially causing further damage to your television.

Locate the part number printed on your existing power supply board, typically on a white sticker or directly silkscreened onto the circuit board. Compare it with RSAG7.820.7748/ROH or 222177.

4. Guia d'instal·lació (Configuració)

This section outlines the general steps for replacing a power supply board. Professional installation is highly recommended due to the risks involved with high voltagi electrònica.

4.1. Eines necessàries

• Tornavís de cap Phillips
• Flathead screwdriver (for prying, if necessary)
• Anti-static wrist strap and mat
• Plastic prying tools (optional, for opening TV casing)
• Multimeter (optional, for testing voltagés)

4.2. Preparació

1. Unplug the TV: Ensure the television is completely disconnected from the AC power outlet.
2. Espai de treball net: Prepare a clean, well-lit, and spacious work area. Place the TV face down on a soft, clean surface to protect the screen.
3. Protecció ESD: Put on your anti-static wrist strap and connect it to a grounded point.
4. Access Rear Panel: Carefully remove the screws securing the TV's rear panel. Use plastic prying tools if needed to gently separate the panel from the chassis.

4.3. Passos d'instal·lació

1. Localitza el tauler antic: Identify the existing power supply board within the TV chassis. It is typically the largest board with the main AC power input connector.
2. Desconnexió de cables: Carefully disconnect all cables connected to the old power supply board. These usually include connectors for the main board, backlight, and other internal components. Take photos before disconnecting to aid reassembly.
3. Treure la placa antiga: Unscrew the mounting screws that secure the old power supply board to the TV chassis. Gently lift and remove the old board.
4. Instal·lar la placa nova: Position the new RSAG7.820.7748/ROH 222177 power supply board in the same location. Ensure it aligns correctly with the mounting holes.
5. Secure New Board: Reinsert and tighten the mounting screws to secure the new board firmly in place. Do not overtighten.
6. Torneu a connectar els cables: Carefully reconnect all cables to their corresponding ports on the new power supply board. Refer to your photos if unsure. Ensure all connections are snug and secure.
7. Initial Test (Optional): Before reassembling the TV, you may perform a quick power-on test. Plug in the TV and observe if the standby light illuminates or if the TV powers on. Immediately unplug if any issues arise.
8. Remuntar el televisor: Once satisfied with the installation, carefully reattach the TV's rear panel and secure it with all screws.

5. Funcionament

After successful installation, plug the television back into a grounded power outlet. The TV should now power on normally. Observe for any unusual sounds, smells, or visual anomalies. If the TV functions as expected, the installation was successful.

6. Manteniment

Power supply boards generally require minimal maintenance. To ensure longevity and optimal performance:

• Mantenir net: Periodically, with the TV unplugged, gently clean any dust accumulation from the TV's ventilation openings to ensure proper airflow.
• Eviteu els vessaments: Prevent liquids from coming into contact with the television, as this can cause short circuits and damage to internal components.
• Ventilació adequada: Ensure the television has adequate space around its ventilation openings to dissipate heat effectively.

7. Solució De Problemes

Si el televisor no funciona correctament després d'instal·lar la nova placa d'alimentació, tingueu en compte els passos següents per solucionar problemes:

• No Power/Standby Light Off: Double-check all cable connections to the power supply board and other components. Ensure the AC power cord is securely plugged into both the TV and the wall outlet. Verify the wall outlet has power.
• Intermittent Power/Flickering: Re-examine all connections for looseness. This could also indicate a fault with another component (e.g., main board, backlight inverter).
• Vol incorrectetages (Advanced): If you have a multimeter and are experienced in electronics repair, you can test the output voltages from the power supply board's connectors against the specified values (12V, 16V, 160V). Extremeu les precaucions quan treballeu amb circuits actius.
• Still No Function: If troubleshooting does not resolve the issue, the problem may lie with another component of the television (e.g., main board, T-con board, LED backlight strips) or the replacement power supply board itself may be faulty.

If you are unsure about diagnosing the problem, it is recommended to seek assistance from a professional television repair technician.

8. Especificacions

9. Garantia i Suport

As this is a replacement part, warranty coverage typically depends on the seller's policy. Please refer to the original seller or vendor from whom you purchased this power supply board for specific warranty terms and conditions.

For technical support, installation guidance, or to report a faulty part, it is recommended to contact the seller directly. The seller (e.g., Xtreem Parts, as mentioned in product information) can provide specialized assistance and help diagnose issues related to this specific component.

Conserveu sempre el comprovant de compra per a qualsevol reclamació de garantia o consulta d'assistència.