中文
含义
LED指示灯闪烁1次，表示电视的背光系统或LCD面板出现故障。这是索尼电视最常见的硬件故障指示之一，通常意味着背光LED灯条、背光驱动电路或液晶面板本身存在问题。
常见原因
- 背光LED灯条老化或损坏，导致部分或全部灯条无法点亮
- 背光驱动板（LED driver board）故障，输出电压异常
- LCD液晶面板内部短路或破裂
- 主板到背光驱动板的排线接触不良或断开
- 电源板向背光电路供电异常
自助排查
- 在暗室中用手电筒照射屏幕，观察是否有非常暗淡的图像——如果有，则背光坏而面板正常
- 检查电视内部背光驱动板连接排线是否松动，重新插拔
- 测量电源板输出至背光驱动板的电压是否在标称范围内
- 如背光LED灯条损坏，需联系专业维修更换灯条
English
Meaning
The LED indicator blinks once, indicating a failure in the TV’s backlight system or LCD panel. This is one of the most common hardware failure indicators on Sony TVs, typically signaling issues with the backlight LED strips, backlight driver circuit, or the LCD panel itself.
Common Causes
- Backlight LED strips aged or damaged, causing partial or complete failure to illuminate
- Backlight driver board failure, outputting abnormal voltage
- LCD panel internal short circuit or cracking
- Loose or disconnected ribbon cable between main board and backlight driver board
- Power supply delivering abnormal voltage to the backlight circuit
Self-Check Steps
- Shine a flashlight on the screen in a dark room and check for a very dim image — if present, backlight is faulty but panel is good
- Inspect and reseat the ribbon cables connecting the backlight driver board
- Measure the power supply output voltage to the backlight driver board against nominal values
- If LED strips are damaged, contact professional repair service for replacement