业余维修:
请问尤耐克TIG200在不接焊把的情况下反复短接焊枪开关,电源无故障接焊把后,勾焊枪开关多次后就烧电阻R1(2K培训教材中标住的)请教是怎么回事,如何排除?谢谢[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/82/3400491255325007.jpg');}"onmousewheel="returnimgzoom(this);">