AB350 Gaming-ITX/ac not powering on

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   I first configured it to test it with just the GPU card (GTX-1070), which was powered from the GPU connector, and the two motherboard power connectors + power switch. Memory was also installed. CPU is Ryzen 1700. The CPU fan is/was also plugged in (of course).

When I first powered it on, it came on for a few seconds (the CPU fan was running), and then it powered off. I haven't been able to get it to do anything since.

I now have no memory or GPU installed. I've tried resetting CMOS and pulling the CMOS battery. Neither had any effect. I've also tested it on two different cases and power supplies.

It appears to be completely dead now. Any suggestions?

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faceplant Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 Oct 2018 Location: US Status: Offline Points: 5	Post Options Post Reply Quote faceplant Report Post Thanks(0) Quote Reply Topic: AB350 Gaming-ITX/ac not powering on Posted: 07 Oct 2018 at 1:47am
	I first configured it to test it with just the GPU card (GTX-1070), which was powered from the GPU connector, and the two motherboard power connectors + power switch. Memory was also installed. CPU is Ryzen 1700. The CPU fan is/was also plugged in (of course). When I first powered it on, it came on for a few seconds (the CPU fan was running), and then it powered off. I haven't been able to get it to do anything since. I now have no memory or GPU installed. I've tried resetting CMOS and pulling the CMOS battery. Neither had any effect. I've also tested it on two different cases and power supplies. It appears to be completely dead now. Any suggestions?

xhue Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 17 Aug 2018 Status: Offline Points: 634	Post Options Post Reply Quote xhue Report Post Thanks(0) Quote Reply Posted: 07 Oct 2018 at 3:23am
	Check if your mobo is not shorting out some lead. Try pulling it out the case and try booting it up bare-bone. Check if PSU is OK too. If this doesn't help, RMA the mobo.

faceplant Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 Oct 2018 Location: US Status: Offline Points: 5	Post Options Post Reply Quote faceplant Report Post Thanks(0) Quote Reply Posted: 07 Oct 2018 at 6:07am
	Thanks for the reply. It ended up re-seating the CPU and it's working well now. The only problem now is one of my fans is not working, but that's not a problem with the motherboard.

xhue Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 17 Aug 2018 Status: Offline Points: 634	Post Options Post Reply Quote xhue Report Post Thanks(0) Quote Reply Posted: 07 Oct 2018 at 3:52pm
	Excellent news! How come CPU was notcseated well? It is just a simple drop down. It either fits or not. IDK if locking bar can be engaged if CPU is not seated well?.

faceplant Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 Oct 2018 Location: US Status: Offline Points: 5	Post Options Post Reply Quote faceplant Report Post Thanks(0) Quote Reply Posted: 07 Oct 2018 at 10:52pm
	There was a bit too much thermal compound on the previous installation, so I cleaned it very well this time and verified it was clean under a microscope. I also noticed one pin was bent a bit. Maybe there was a little thermal compound on the pins, or maybe the bent pin was causing the problem. I don't know for sure.