4 故障排除
4-1
4 Troubleshooting
4-1. Troubleshooting
1. In front of the repair, set the custom mode as follows:
- Resolution:1920×1080
- Horizontal frequency:67.5 kHz
- Vertical frequency:60 Hz
2. If no image appears, ensure that the power cables are properly connected.
3. Check the following circuit:
- If the screen is black: functional printed circuit board Assembly, printed circuit board
assemblies
- If LED Background lights not lit, despite LED Open: check LED Drive, 1 And 2 Connector
between the layers and FPC LVDS Wiring
- If W/R/G/B Test chart can display, although the background light is lit: check 60 针 FFC
Wiring, 1 And 2 Connector between the layers and FPC LVDS Wiring
4. Press [Menu] Button and change the brightness and contrast 0, Then press and hold“
(Confirmation/Source)”Button for more than 5 Seconds, the display will automatically go to
factory reset.
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