中文
含义
面板时序控制（T-CON）故障。屏幕出现花屏、竖线、白屏或画面撕裂，但声音正常，表明时序控制板或屏驱动电路异常。
常见原因
- T-CON板供电保险丝熔断导致驱动芯片无供电
- 时序控制芯片（TCON IC）损坏或内部伽玛参考电压偏移
- 屏线（排线）接触不良或金手指氧化导致数据信号丢失
- 主板上屏电压（VGH/VGL）DC-DC转换电路故障
- 面板COF（Chip-on-Film）绑定松动或压接不良
自助排查
- 关机后重新插拔屏线两端，确保接触良好
- 观察故障画面是否随时间变化——固定竖线多为COF问题，闪烁花屏可能为T-CON故障
- 测量T-CON板上保险丝是否导通，若熔断需检查后级有无短路
- 更换T-CON板进行交叉测试，注意务必匹配屏型号
English
Meaning
Panel timing controller (T-CON) failure. The TV displays distorted images, vertical lines, white screen, or tearing while audio remains normal, indicating the T-CON board or panel driver circuitry is faulty.
Common Causes
- Blown fuse on the T-CON board, starving the timing controller of power
- Failed T-CON IC or shifted gamma reference voltages causing incorrect gray levels
- Loose, oxidized, or damaged ribbon cable (LVDS/eDP) between main board and T-CON
- Defective DC-DC converter on the main board failing to produce VGH/VGL panel voltages
- Loose COF (Chip-on-Film) bonding at the panel edge
Self-Check Steps
- Power off, disconnect and reconnect the ribbon cables at both ends to ensure good contact
- Observe whether the defect pattern is static (likely COF) or dynamic/flickering (likely T-CON)
- Check the T-CON fuse with a multimeter for continuity; if blown, inspect for downstream shorts
- Replace the T-CON board with an exact panel-match spare to isolate the fault