中文
含义
T-Con板（时序控制板）故障。画面一半正常一半异常、颜色反转、残影严重或出现噪点画面。
常见原因
- T-Con板保险电阻熔断导致VGH/VGL电压缺失
- Gamma校正芯片损坏导致灰阶显示严重偏色
- T-Con板与面板之间的COF排线接触不良
- 主控芯片到T-Con板的LVDS/eDP信号异常
- T-Con板DC-DC转换电路输出电压偏离标准值
自助排查
- 观察故障画面是否在屏幕中间有明显分界线——多为T-Con问题
- 轻轻按压T-Con板连接面板的排线，看画面是否暂时改善
- 测量T-Con板上关键测试点电压（VGH约25-30V、VGL约-5~-8V、VCOM）
- 检查T-Con板保险电阻是否开路
- 更换T-Con板前确认主板提供正确的LVDS/eDP信号
English
Meaning
Timing control (T-Con) board failure. Half of the screen appears normal while the other half is distorted, colors are inverted, severe ghosting, or noisy image artifacts.
Common Causes
- Blown fuse resistor on the T-Con board causing missing VGH/VGL drive voltages
- Damaged gamma correction IC producing incorrect grayscale levels
- Poor contact on the COF (Chip on Film) ribbon between T-Con and the panel
- Faulty LVDS/eDP signal from the main board to the T-Con board
- T-Con board DC-DC converter output voltages out of specification
Self-Check Steps
- Check if the fault has a sharp vertical/horizontal dividing line — a classic T-Con symptom
- Gently press the ribbon cables between the T-Con board and the panel to see if the image temporarily improves
- Measure key T-Con test points (VGH ~25-30V, VGL ~-5 to -8V, VCOM)
- Check the T-Con board fuse resistor for continuity
- Before replacing the T-Con board, verify the main board is outputting correct LVDS/eDP signals