电子显微镜高压电缆发生故障，从而造成高压，灯丝电流加不上，电镜无法正常工作。这种故障是很难修复的。我们经慎重研究，提出多套方案，几年间已排除多台日立早期生产的电镜高压电缆故障。现简介修理过程，供同行们参考。首先将高压电缆从高压油箱内拔出，用万用表检查... Electron microscope high-voltage cable failure, resulting in high pressure, filament current can not add, electron microscope can not work. This failure is difficult to repair. We have carefully studied and put forward a number of sets of programs, several years have ruled out more than Hitachi early production of electron microscopy high-voltage cable fault. Now introduce the repair process for your colleagues for reference. First unplug the high voltage cable from the high pressure tank and check with a multimeter.