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接修一台康佳T920C遥控彩电,以前的维修员认为应更换偏转线圈新品。细查为一只行偏转线圈在显像管面烧坏约2mm~2一片,线圈短路严重,十多根线已裸露出铜,深度估计有几层,已无法将短路线分开。拆修该线圈工艺要求高且量大,不小心可能将好的一只行线圈及一组场线圈弄坏,而更换新品价格又较贵。 根据维修经验,偏转线圈高压打火较重时一般面积加宽,深度不会太深。笔者先将行偏线圈两个线头各四根线分开(为双线并绕后并接),测直流电阻各为:10Ω、10Ω、8.5Ω及7.5Ω～∝来回变化。10Ω的
Pick up a Konka T920C remote color TV, the previous maintenance staff think that should be replaced by new deflection coils. A detailed examination of a deflection coil in the CRT surface burn about 2mm ~ 2 a, a serious short-circuit coils, more than 10 lines have bare copper, the depth of the estimated number of layers, has been unable to separate the short-circuit. Disassembly of the coil process requires a high volume and large, careless may be a good line and a set of field coils damaged, and replace the new price is more expensive. According to the maintenance experience, high voltage ignition deflection coil heavier general area, the depth will not be too deep. The author first line of the two coils off the first four separate wire (for the double and around and after the parallel), measured DC resistance are: 10Ω, 10Ω, 8.5Ω and 7.5Ω ~ α back and forth changes. 10Ω