标题: Dell inspiron 3521 +VCC_GFXCORE_AXG absent [打印本页] 作者: mohkam51 时间: 2016-8-22 07:06 标题: Dell inspiron 3521 +VCC_GFXCORE_AXG absent Hello friends!
This is my 1st post, but unfortunately can not write in chinese language!
I got dell inspiron 15r3521 - platform : LA-9104P for repair, with shorted 19v line.
After replacing faulty PQ701 and PQ704, short is gone, and all voltages are Ok except +VCC_CORE and +VCC_GFXCORE_AXG (both=0V)
Changed PU700 Isl95833 with a recovered IC from another motherboard, +VCC_CORE is now Ok, but +VCC_GFXCORE_AXG is still absent (=0V)
VCC_GFXCORE_AXG Resistance to gnd=0.30hm (at coil PL700)
Flashed UH2 (EN25QH16) and UH6 (EN25Q32B) with dump file downloaded from this site, always same problem!!!
Any idea, what to do next ???
Is there a way (a tip) to test the +VCC_GFXCORE_AXG line without load of PCH HM76, so as to confirm whether output line has problem or HM76 ???
I think that reflashing IC kb9012 is not needed for this kind of issue. Do you agree ?
Thank you for any help!
作者: 句容诚信电脑 时间: 2016-8-22 07:24
英文表示看不懂 楼主能写中文吗 作者: cxghsm 时间: 2016-8-22 07:50
哪里的朋友,全是英文,表示看不懂。作者: 蔚蓝额天空 时间: 2016-8-22 08:32
大概意思说是第一次发帖,开始公共点短路 搞定后发现 +VCC_CORE and +VCC_GFXCORE_AXG没电 0V,更换 95833后+VCC_CORE有电了但是+VCC_GFXCORE_AXG还是没电,测量了一下 +VCC_GFXCORE_AXG对地阻值0.3HM,刷了 2个BIOS 故障依旧 求思路作者: 蔚蓝额天空 时间: 2016-8-22 08:35
后面还有 大概说+VCC_GFXCORE_AXG从哪里来的?是 换PCH还是 9012?会分析的可以帮助分析一下电路图作者: mohkam51 时间: 2016-8-22 20:29
Hi !
Summarize : Dell inspiron 15R3521 mobo LA-9104P came shorted.
After I changed Isl 95833 + PQ701 and PQ704, fan is now spinning but no display!
All voltages are Ok, except VCC_GFXCORE_AXG=0V
VCC_GFXCORE_AXG output resistance to Gnd=0.3 ohm
Any idea on how to solve the problem and get display ???
Thank you
Translation to Chinese with google engine :
嗨!
总结:戴尔Inspiron 15R3521主板LA- 9104P来了短路。
Hi! forget to thank you for your translation of my post from English to Chinese, to help members understand my post..作者: mohkam51 时间: 2016-9-10 05:05
Hi !
Thank you "天下" for your reply. I didn't expect to get any help!
Will see current jump and beep codes and give feed back soon.
Did you mean that + VCC_GFXCORE_AXG is not needed to get display ? p.s explain!
Do you understand English ?
Thank you
Hi "World",
Thank you for your new post.
Only, I didn't understand "所伊如果CPU核显没有供电的话,照样也可以有显示的!". Could you please try to write it in English.
Thank you again.作者: 天下 时间: 2016-9-16 09:09
sorry i write the wrong word ! this 所伊! this type minboard no + VCC_GFXCORE_AXG voltage it can display !this true status !作者: mohkam51 时间: 2016-9-16 17:55
You mean it can display on external monitor only, but not on laptop screen ?作者: 天下 时间: 2016-9-17 11:55
my meaning is it can display on laptop screen !作者: 天下 时间: 2016-9-17 12:06
how many current ?is or is not jump ? current jump very importance !作者: mohkam51 时间: 2016-9-18 20:22
Will be away for few days. Will give feed back soon.作者: 天下 时间: 2016-9-19 14:33
Already give feed back ! no + VCC_GFXCORE_AXG voltage ,it also can display on laptop screen ! the laptop how many current ?is or is not jump ?