论文部分内容阅读
一台使用多年的夏普 C-1837DK 彩电,突然出现颜色偏色现象,彩条由正常的白、黄、青、绿、紫、红、兰、黑、变为紫、红、蓝、黑、紫、红、蓝、黑。分析检修:这种现象说明图像缺少绿基色,开机后测量三只视放管各脚电压均正常,试调白平衡无效。用示波器观察显像管座的⑦、⑨、③脚波形亦无异常,故判定是显像管绿枪损坏。该显像管型号为“SHARP”470RWB22P,因无备件,在市场上购得一只国产“彩虹”管,型号470NWB22,参数与之相同,可以直接代换。
A multi-year use of Sharp C-1837DK color TV, a sudden color cast color phenomenon, the color bar from the normal white, yellow, green, green, purple, red, blue, black, purple, red, blue, black, purple , Red, blue, black. Analysis and maintenance: This phenomenon shows that the lack of green-color image, turn on the power of three feet after the test voltage is normal, try to adjust the white balance is invalid. Observed with the oscilloscope tube seat ⑦, ⑨, ③ foot waveform is no exception, it is determined that the CRT green gun damage. The tube model “SHARP” 470RWB22P, because there is no spare parts on the market to buy a domestic “Rainbow” tube, model 470NWB22, the same parameters, you can directly replace.