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彩电因电阻失效引起的三无故障两例（１）一台海燕牌ＣＳ４７－２ＡＶ型彩电的三无故障打开机器后盖，观察保险丝Ｆ０１（３．１５Ａ）完好。通电测行输出管Ｑ（５０２）集电极１１５Ｖ电压正常。证明主电源（Ｂ１）工作正常。将万用表换到１０Ｖ挡测Ｑ（５０２）基极电压...
TV failure due to failure caused by three non-fault two cases (1) a Swift CS47-2AV-type TV three no fault Open the machine back cover, observe the fuse F01 (3.15A) intact. Power line measurement output tube Q (502) Collector 115V voltage is normal. Proved that the main power (B1) is working properly. The multimeter switch to 10V Q test (502) base voltage ...