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机型:孔雀KQ37-39 型14英寸彩色电视机故障现象:亮度不稳定,有暗红色短横线。初查:电视机伴音、图象及颜色都有,亮度变化没有规律性。在屏幕的左侧从上到下有5～8cm长度不等、抖动变化着的陪红色短横线,象拉毛。仅亮时亮度才可调,亮度低或无光栅时暗红色短横线清晰可见,如果亮度大时暗红色短横线就看不清楚了,不管有图象还是无图象都这样。造成亮度不稳定的原因很多,比较常见的有:电源、行扫描电路、显象管及周围电路有接触不好的,都可能产生此故障。先用敲击法轻微振动电视机,光栅亮度没有变化,这就排除了电路有接触不好的可能
Model: Peacock KQ37-39 14-inch color TV Fault phenomenon: brightness is not stable, dark red dash. Initial investigation: TV sound, images and colors are, brightness changes without regularity. On the left side of the screen from top to bottom 5 to 8cm in length, jitter changes with the red dash, like hair. Only bright when the brightness is adjustable, low brightness or no grating dark red dash clearly visible, if the brightness is dark red dash is not clear, with or without images are so. Brightness caused by instability for many reasons, the more common are: power, line scan circuit, kinescope and the surrounding circuit has bad contact, may have this fault. Slight vibration of the television with a percussion method, the grating brightness has not changed, which ruled out the circuit may have bad contact