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故障现象:长虹2126FB彩电,光栅行幅宽,场幅基本正常。仔细观察屏幕,图像很亮,用遥控器将亮度及对比度调至最小,图像仍较亮,但伴音正常。
Symptoms: Changhong 2126FB color TV, raster line width, field amplitude is normal. Carefully observe the screen, the image is very bright, the brightness and contrast with the remote control to a minimum, the image is still bright, but the sound is normal.