1. Bubuka
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of the RSAG7 820 7520 ROH motherboard, designed for Hisense LED55N3700U televisions utilizing the HD550N3U3 screen. This product is a replacement component intended for professional installation. Please read all instructions carefully before proceeding.
2. Produk Langkungview
The RSAG7 820 7520 ROH is a main drive motherboard for specific Hisense 55-inch TV models. It integrates various functions necessary for the television's operation, including video processing, audio output, and input/output management.

Gambar 2.1: Hareupeun view of the RSAG7 820 7520 ROH motherboard.
Diwincik Views of the Motherboard






3. Spésifikasi
| Fitur | Spésifikasi |
|---|---|
| Ngaran Brand | TAPNM |
| Nomer modél | RSAG7 820 7520 ROH |
| Applicable TV Model | Hisense LED55N3700U |
| Applicable Screen Model | HD550N3U3 |
| Width (TV Size) | 55 inci |
| Bahan Awak | alumunium |
| Sumber Daya | AC |
| Voltage | 110 V |
| Nyaéta Dimmable | No |
| Nyaeta Batré Kaasup | No |
| Asalna | Daratan Cina |
| Paket Ngawengku | 1 PCS |
| Ukuran Paket (L x W x H) | 59 cm x 4 cm x 4 cm |
| Beurat pakét | 0.2 kg |
4. Setup jeung Instalasi
penting: Installation of this motherboard requires technical expertise and should only be performed by qualified professionals. Improper installation can lead to damage to the TV or personal injury. Always ensure the TV is unplugged from the power source before beginning any installation.
Daptar pariksa Pra-Pasang:
- Verify the TV model (Hisense LED55N3700U) and screen model (HD550N3U3) match the specifications.
- Confirm the motherboard model (RSAG7 820 7520 ROH) matches your original board. Compare the physical appearance and connector layout with the provided images.
- Gather necessary tools (screwdrivers, anti-static wrist strap, plastic prying tools).
- Pastikeun rohangan gawé anu bersih sareng caang.
Léngkah-léngkah pamasangan:
- Pegatkeun Daya: Unplug the TV from the wall outlet and disconnect all external devices.
- Aksés TV internal: Carefully place the TV face down on a soft, clean surface. Remove the back cover of the TV by unscrewing all retaining screws.
- Locate and Remove Old Motherboard: Identify the existing motherboard. Disconnect all cables connected to it (power, ribbon cables, antenna, HDMI, USB, etc.). Pay close attention to the orientation of each connector. Remove the screws securing the old motherboard to the TV chassis.
- Pasang Motherboard Anyar: Gently place the new RSAG7 820 7520 ROH motherboard into position, aligning it with the screw holes. Secure it with the retaining screws.
- Sambungkeun deui kabel: Carefully reconnect all cables to their corresponding ports on the new motherboard. Ensure all connections are firm and correctly oriented. Double-check ribbon cable connections for proper seating.
- Pasang deui TV: Replace the TV back cover and secure it with all screws.
- Power-Up mimiti: Plug the TV back into the power outlet. Power on the TV and check for proper functionality.
Catetan: If you are unsure about compatibility or any step of the installation process, it is highly recommended to consult with a professional TV repair technician.
5. Operasi
Once the RSAG7 820 7520 ROH motherboard is correctly installed, your Hisense LED55N3700U TV should function as intended. The motherboard facilitates all standard television operations, including:
- Daya Hurung/Pareuman
- Channel Tuning and Selection
- Input Source Switching (HDMI, USB, AV, etc.)
- Volume Control
- Picture and Sound Settings Adjustment
- Smart TV functionalities (if applicable to your TV model)
Refer to your Hisense LED55N3700U TV's original user manual for detailed instructions on operating your television's features and settings.
6. Pangropéa
The RSAG7 820 7520 ROH motherboard is designed for long-term reliability and generally requires no routine maintenance. To ensure its longevity and optimal performance, follow these general guidelines:
- Tetep garing: Avoid exposing the TV to moisture or high humidity, which can damage electronic components.
- Kabersihan: Keep the TV's ventilation openings clear of dust and debris to prevent overheating. Do not spray cleaning liquids directly onto the TV.
- Hindarkeun Dampak Fisik: Protect the TV from drops, bumps, or excessive vibrations.
- Ventilasi anu leres: Ensure adequate airflow around the TV to dissipate heat effectively.
- Surges kakuatan: Consider using a surge protector to safeguard against electrical fluctuations.
7. Cara ngungkulan
If you encounter issues after installing the new motherboard, consider the following troubleshooting steps:
Masalah umum sareng Solusi:
- Teu aya Daya / Teu aya tampilan:
- Ensure all power cables and internal connectors are securely attached.
- Verify the TV model and screen model compatibility with the motherboard.
- Pariksa naha stop kontak listrik fungsina.
- Picture Problems (e.g., distorted image, no backlight):
- Confirm all ribbon cables connecting the motherboard to the screen and other components are correctly seated and undamaged.
- Ensure the correct motherboard model was installed for your specific TV and screen. Many TV models use different sets of internal components.
- Sound Problems (e.g., no audio, distorted audio):
- Pariksa sadaya sambungan kabel audio.
- Verify TV's audio settings.
- TV Constantly Reboots or Software Malfunctions:
- This can indicate an incompatibility or a software issue. Double-check that the board model is an exact match for your TV.
- If possible, attempt a factory reset of the TV (refer to your TV's original manual for instructions).
- Input Ports Not Working (HDMI, USB, etc.):
- Ensure external devices are properly connected and functional.
- Check the TV's input source settings.
Upami léngkah-léngkah ieu henteu ngabéréskeun masalah, bantosan profésional panginten diperyogikeun.
8. Tips pamaké
- Verify Compatibility Carefully: Sateuacan meuliasing or installing, always compare the model number of this motherboard (RSAG7 820 7520 ROH) with your original TV board. Also, confirm your TV model is Hisense LED55N3700U and the screen is HD550N3U3.
- Konfirmasi Visual: It is highly recommended to open your TV and visually compare your existing board with the product images provided. If you are unsure, take a clear photo of your original board and its labels for verification.
- Pamasangan profésional: Due to the delicate nature of TV components and the risks involved with electrical work, professional installation is strongly advised.
- Nanganan kalayan ati-ati: When handling the motherboard, always use an anti-static wrist strap to prevent damage from electrostatic discharge. Avoid touching the electronic components directly.
9. Garansi jeung Rojongan
Motherboard ieu dilengkepan ku garansi 1 taun ti tanggal dibeuli, ngawengku defects manufaktur.
For Support and Inquiries:
If you have any questions, require assistance, or encounter a problem with the product, please contact the seller directly through their designated communication channels (e.g., Trademanager or email). The seller is committed to actively cooperating with customers to resolve any issues.





