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) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/371731233982502.gif');}" onmousewheel="return imgzoom(this);">新手请教电路问题?请各位大师指教,谢谢!!!
我现在遇有一款机顶盒电源(元件部分电路图如下),在C11位置的铝电解电容16V1000经常有市场反馈说失效(鼓包)故障,当16V1000失效时,有时候同时有C12位置的16V470也一样失效.请大师们帮我分析分析看....急得头大了...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) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/371731233982502.gif');}" onmousewheel="return imgzoom(this);">
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) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/74/371731233982502.gif');}" onmousewheel="return imgzoom(this);">