论文部分内容阅读
NC-2T机芯的彩电保护电路动作时,常规的检修方法是将TA7698第(30)脚瞬时对地短路,强使行振荡电路工作,然后根据屏幕现象来分析检修。笔者认为这种方法不是检修保护电路的好方法。因为保护电路与行扫描电路是互相联系的,当保护电路动作时,行振荡停振,行电路不工作;反之行电路不工作,也可造成保护电路动作。该闭
NC-2T movement of the color TV protection circuit operation, the routine maintenance method is to TA7698 (30) feet short to ground instantaneous, strong line oscillator circuit to work, and then analyzed according to the screen phenomenon overhaul. I think this method is not a good way to overhaul the protection circuit. Because the protection circuit and the line scan circuit are interrelated, when the protection circuit action, the line oscillation stops vibration, the line circuit does not work; the other hand, the circuit does not work, can also cause the protection circuit action. The closed