在检修松下2188或德加拉TC—21L12R(C150机芯)彩电时,发现不能带“假负载”,我用一只60W的灯泡做假负载,把所有损坏元件都换好还是无输出电压,在无头绪的情况下,当时想反正无输出电压把假负载去掉后再试机,听到“吱”的一声,感觉声音是从开关变压器发出,开关电源振荡了,用万用表测量C815输 Maintenance of Panasonic 2188 or Tela TC-21L12R (C150 movement) color TV and found that can not bring a “fake load”, I use a 60W bulb to do a dummy load, all damaged components are good or no output voltage, In the case of no clue, then anyway, no output voltage to remove the dummy load test machine, hear the “squeak”, I feel the sound is sent from the switching transformer, switching power supply oscillation, with a multimeter to measure C815 lose