LG 6870C-0170B / 6871L-1190A

T-CON LVDS Logic Board User Manual

Model: 6870C-0170B / 6871L-1190A

For LG LCD Televisions

1. Bubuka

This manual provides essential information for the installation, operation, maintenance, and troubleshooting of the 6870C-0170B / 6871L-1190A T-CON (Timing Controller) LVDS Logic Board. This board is a critical component responsible for processing video signals and transmitting them to the LCD panel, ensuring proper image display on compatible LG LCD televisions.

Before proceeding with any installation or repair, please read this manual thoroughly and ensure you have the necessary technical expertise. Incorrect installation can lead to damage to the board or your television.

2. Pancegahan Kasalametan

  • Salawasna pegatkeun sambungan televisi tina catu daya utama sateuacan nyobian masang atanapi ngalereskeun naon waé.
  • Wear anti-static wrist straps to prevent electrostatic discharge (ESD) damage to sensitive electronic components.
  • Damel di lingkungan anu bersih, caang, sareng garing.
  • Do not touch the metallic contacts or components on the board unnecessarily.
  • Upami anjeun henteu yakin kana léngkah naon waé, konsultasi ka teknisi anu mumpuni.

3. Pitunjuk Instalasi

This T-CON board is intended as a replacement part for specific LG LCD TV models. Professional installation is highly recommended.

3.1 Compatibility Verification

It is crucial to verify the compatibility of this T-CON board with your specific television model and existing T-CON board. Refer to the model numbers printed on your original board and compare them with the models listed in the specifications section of this manual. The primary model numbers for this board are 6870C-0170B jeung 6871L-1190A.

Close-up of the 6870C-0170B T-CON board showing model numbers and components.

Figure 1: 6870C-0170B T-CON Board - Verify model numbers.

3.2 Prosedur ngagantian

  1. Nyiapkeun TV: Lay the television screen-down on a soft, clean surface to prevent scratches.
  2. Cabut panutup tukang: Carefully remove the TV's back cover by unscrewing all retaining screws. Keep track of screw locations.
  3. Locate the T-CON Board: The T-CON board is typically located at the top or bottom center of the LCD panel, often under a metal shield. It connects the main board (via an LVDS cable) to the LCD panel (via ribbon cables).
  4. Pegatkeun sambungan kabel:
    • Gently disconnect the LVDS cable (a wide, flat cable) connecting the T-CON board to the main board.
    • Carefully unlatch and disconnect the ribbon cables that connect the T-CON board to the LCD panel. Be extremely gentle as these connectors are fragile.
  5. Hapus Papan Lama: Unscrew the old T-CON board from its mounting points and carefully remove it.
  6. Pasang Papan Anyar:
    • Position the new 6870C-0170B / 6871L-1190A T-CON board in place and secure it with the screws.
    • Reconnect the ribbon cables to the LCD panel, ensuring they are fully seated and latched.
    • Reconnect the LVDS cable to the main board.
  7. Tés Awal (Opsional tapi Disarankeun): Before fully reassembling, you may perform a preliminary power-on test to ensure the display functions correctly. If the display is good, proceed to reassembly. If not, recheck all connections.
  8. Pasang deui TV: Replace any metal shields and then reattach the TV's back cover, securing all screws.
T-CON board connected to a test setup with a small display.

Gambar 2: Kelample of a T-CON board in a test environment.

4. Parentah Operasi

The T-CON board is an internal component that operates automatically once installed correctly. There are no user-adjustable settings or direct operating controls for the T-CON board itself. Its proper function is indicated by a clear and stable image on your television screen.

If the television powers on but displays no image, a distorted image, or incorrect colors, refer to the Troubleshooting section.

5. Pangropéa

The T-CON board requires no routine maintenance. To ensure its longevity:

  • Simpen televisi di tempat anu ventilasina saé pikeun nyegah panas teuing.
  • Ulah nepi ka televisi kakeunaan lebu anu kaleuleuwihi, kalembaban, atanapi suhu anu ekstrim.
  • If the TV needs internal cleaning, always disconnect power and use compressed air or a soft brush to gently remove dust from components, taking care to avoid static discharge.

6. Cara ngungkulan

If you encounter issues after installing the T-CON board, consider the following:

MasalahMungkin Cukang lantarananaSolusi
No picture, but TV has sound/power light is on.Loose or improperly connected LVDS or ribbon cables. Faulty T-CON board.
  • Ensure all cables (LVDS, ribbon) are securely connected.
  • Verify the T-CON board is correctly seated and screwed in.
  • If the issue persists, the T-CON board might be faulty or incompatible.
Distorted image, lines on screen, or incorrect colors.Loose ribbon cables to the LCD panel. Faulty T-CON board. Panel issue.
  • Carefully re-seat the ribbon cables connecting the T-CON board to the LCD panel.
  • Ensure the T-CON board is compatible with your specific panel.
  • If the problem persists, the LCD panel itself might be damaged.
TV not turning on at all.Power supply issue, main board issue, or other component failure.
  • This symptom is less likely to be caused by a T-CON board. Check power supply and main board.

If the product was damaged during transportation, please inform customer service immediately upon receipt.

7. Spésifikasi

FiturRincian
Board Model Numbers6870C-0170B, 6871L-1190A
Compatible TV Models (LG)42LB5RT-TB, 42LB9R-TD, 42LC46-ZC, 42LC55-ZA, 42LC7D
Compatible Panel ModelLC420WX8
SertifikasiCE
AsalnaDaratan Cina
Ukuran Paket (approx.)21 cm (Panjang) x 15 cm (Lebar) x 5 cm (Jangkungna)
Beurat Paket (approx.)0.3 kg

8. Tips pamaké

  • Pariksa kasaluyuan: Always double-check the exact model number of your existing T-CON board and your TV model against the product description to ensure full compatibility before purchase.
  • Pariksa Fungsionalitas: Be aware that due to regional differences (e.g., frequency, antenna, network signals), some TV functions might not be fully supported by a replacement board. Consult customer service for specific details if you have concerns.
  • Pamastian kualitas: All boards are tested for functionality before shipment. While some may be new, others might be used but fully functional and tested.
  • Nanganan kalayan ati-ati: Electronic components are delicate. Exercise extreme caution when handling the board and connecting/disconnecting cables to prevent damage.

9. Garansi jeung Rojongan

This product comes with a three-month warranty covering quality problems. If you experience any issues within this period, please contact the seller's customer service for assistance.

For technical support or further inquiries, please reach out to the seller directly. Provide your order details and a clear description of the issue to facilitate a quicker resolution.

Dokumén Patali - 6870C-0170B / 6871L-1190A

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