(1)　开机后 ,整个图像画面逐渐缩小变暗 ,可能是行输出或稳压电源有故障。(2 )　图象忽大忽小不稳 ,说明电视机的高压供电系统有故障 ,不要继续使用。(3)　使用中 ,屏幕上突然出现水平或垂直方向一条亮线 ,其余部分无光 ,说明扫描部分有故障。(4)　若使用中能听到伴音 ,但屏幕 (1) After power on, the whole picture will gradually reduce and darken, it may be line output or power supply is faulty. (2) Suddenly small image suddenly instability, indicating that the TV high voltage power supply system is faulty, do not continue to use. (3) in use, the screen suddenly appeared horizontal or vertical direction of a bright line, the rest without light, indicating that the scanning part of the fault. (4) If you can use to hear sound, but the screen