aurora r4 will not post

yooper

New Member
Apr 6, 2019
3
0
USA
power button has no affect. If i push the small button on the power supply the small green lite and lites come on. As soon as i release it they go out. does that mean the power supply is good? Tried to find a service manual for it but no luck . Does the small master io board control the power or does the motherboard? Pretty hard to toubleshoot with no wiring diagram. Anyone able to help?
thank you in advance.
 

MattyB

Moderator
Mar 19, 2012
3,097
125
Adelaide, Australia
My gut says your mobo is dead but you can start by removing the GPU, RAM, HDD/SSD to see what happens. It could be that one of the other parts has failed and is shorting the power.
I haven't had an Aurora for many years so I can't really remember much about them sorry.
 

Cass-Olé

Member
Jan 9, 2013
265
80
Virginia
I don't know why your PC won't turn on, could be several things, start here w/an explanation of the PSU self-test https://www.dell.com/support/articl...t-psu-built-in-self-test-bist-desktop?lang=en & uTube https://www.youtube.com/watch?v=udGOe7LQJEI

The top power button is the mechanism which starts the PSU, which then powers the mthrbrd & hopefully the PC turns on & stays on, the mi/o daughterboard will also attempt to turn on but it is simply an external usb device

Sometimes the top external power on button will be fussy or the plunger underneath can break, try to give this a read, where JFP1 is the front panel diagram https://www.dell.com/community/Alienware-Desktops/Aurora-R4-won-t-turn-on/td-p/6188553

Here is google search Aurora R4 won't turn on, link to old help posts if needed https://www.google.com/search?ei=pz...wiz.......33i10.cY56z66M8j4#spf=1569537719179

Aurora PDF manuals here https://www.dell.com/support/home/us/en/04/product-support/product/alienware-aurora-r4/docs