中文
含义
E006 为 LED 背光驱动 IC 故障。LED 驱动 IC 负责为背光灯条提供恒流电源，故障时会导致背光闪烁、亮度不均或背光完全熄灭。
常见原因
- 驱动 IC 过热保护触发
- 输出 MOSFET 短路
- 电流采样电阻阻值漂移
- 主板 PWM 调光信号丢失
- 升压（Boost）转换器故障
自助排查
- 断电后检查 LED 驱动板与灯条的连接线是否松动。
- 测量驱动板升压输出是否在正常范围，如无输出可能升压电路损坏。
- 目视检查驱动板 MOSFET 和电容是否有烧焦或鼓包。
- 降低电视背光亮度设置到 50% 以下，观察故障是否缓解（若改善说明灯条或驱动 IC 接近极限）。
- 若驱动板元件损坏，需更换整个 LED 驱动板，建议联系海信售后处理。
English
Meaning
LED backlight driver IC fault. The LED driver IC supplies constant current to the backlight strips. Failure causes backlight flickering, uneven brightness, or complete backlight loss.
Common Causes
- Driver IC overheating triggering thermal protection
- Output MOSFET short circuit
- Current sense resistor value drift
- PWM dimming signal from main board missing
- Boost converter failure
Self-Check Steps
- Power off and check the connection cables between the LED driver board and LED strips for looseness.
- Measure the driver board boost output voltage; if there is no output, the boost circuit may be damaged.
- Visually inspect MOSFETs and capacitors on the driver board for burn marks or bulging.
- Lower the TV backlight brightness setting to below 50%; if the fault improves, the LED strips or driver IC may be nearing their limits.
- If driver board components are damaged, the entire LED driver board must be replaced; contact Hisense after-sales service.