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接修一台创维CTV-8218彩电,故障为“三无”,有“吱吱”声,机主陈述修过几次,都出现过不同的毛病。开壳检查,开关管好“,行管”击穿。查逆程电容正常,行推动变压器好,拆下“行管”,测+B电压正常。装上“行管”试机,高压包打火严重,且开/关机均无光,故障多发。查开关电源元件正常
To repair a Skyworth CTV-8218 color TV, the fault is “three noes”, “creak” sound, the owner stated several times, there have been different problems. Open shell inspection, the switch is good, “line management” breakdown. Check the reversal of the normal capacitance, the line to promote the transformer is good, remove the “line control”, measured + B voltage is normal. Installed “line control” test machine, high pressure ignition package serious, and the light / off are dull, multiple failures. Check the switching power supply components is normal