标题: LENOVOg580 la-7982p no disply on led external disply is ok [打印本页] 作者: johncarter 时间: 2015-4-29 18:11 标题: LENOVOg580 la-7982p no disply on led external disply is ok dear all ,
i have just repair lenovo g580 no disply
on jlvds1 connector
pin 1,2 =+ledvdd 18v ok , pin 22,23 = +lcdvddd_con =0v pin 7= dispoff =0v, pin 8= invt_pwm= 0v
this picture when no displ voltage on circuit this picture when disply come
PCH_ENVDD 3.3v 导通 Q81 使得 Q80的控制为低 产生3.3V的 LCDVDD 作者: johncarter 时间: 2015-4-30 18:10
YES I M KNOW THAT BUT FOR OUR STUDENT 作者: 1035672944 时间: 2015-4-30 18:11
不认识啊 看不懂作者: 完美 时间: 2015-4-30 18:38
外国友人吗作者: woail1314 时间: 2015-4-30 19:15
What is the problem before the repair? 作者: 376446567 时间: 2015-4-30 20:10
图我是懂了,说的我每懂作者: 欲望三国 时间: 2015-4-30 21:12
我没看图我看了英语,难道屏你也搞不定????看来修机还是中国人刚刚的,寄来中国吧,,,,
By the way. But if you have any questions,you can ask me ,my QQ number is 919635285 .It is pleasant for me to help you.作者: Dante 时间: 2015-4-30 22:18
屏供电开启没有,应该还没有过显卡吧,主板还有别的问题吧