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接修一台老式熊猫C54P10A彩电,故障为“三无”。打开机壳后,线路板上有许多灰尘,清扫后,用万用表检测发现,V701(D2334)电源管已损坏,R701(6.8Ω)电阻断,V702(D965)坏,换去损坏元件后,短路推动变压器次级,开机只听“吱”的一声,电源管V701又损坏。经过细心查找,发现V705(D965)性
Pick up a vintage Panda C54P10A color TV, the fault is “three noes.” Open the case, the circuit board has a lot of dust, cleaning, with the multimeter test found that V701 (D2334) power tube has been damaged, R701 (6.8Ω) resistance off, V702 (D965) bad, Short circuit to promote the transformer secondary, boot only listen to “squeak” sound, power tube V701 is damaged. After careful search, found V705 (D965) sex