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X399 Fatal1ty issue

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    Posted: 17 Jun 2020 at 1:34am
Can anyone share how long (+/-) it takes a motherboard RMA in Europe? I've sent my X399 Fatal1ty to RMA one month ago and still didn't have any feedback
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pms Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2020 at 6:22pm
Thanx for the tip. Actually, I've already done multiple CMOS clears without any improvement
I also tested the PSUs in other rigs and they work just fine (all rails ok). Furthermore, today I tested another PSU from a different brand (silverstone) and the poor/abnormal +12V rail behaviour was similar.
At this point I think I'll RMA the motherboard...with the current restrictions just hope not being "waiting for godot"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 16 May 2020 at 4:15pm
Could be a bad sensor. My X399 Phantom Gaming 6 is running within spec (in BIOS,
ASRock APP and CPUID HW Monitor). I also have the latest BIOS and have updated
with every new BIOS version since I got the board.

I would give the 12v rail a check with a multi-meter. I highly doubt 2 PSUs have
the exact same problem though. You can try do a full CMOS clear (pull power, pull
battery and let sit for an hour). That will reset the RTC and other deeper settings.
It could just be a bit of corrupt data that isn't clearing.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pms Quote  Post ReplyReply Direct Link To This Post Posted: 16 May 2020 at 8:32am
Hi,
I recently noticed that my +12V rail is very very low (completely out of norm) and the values in the picture below are similar to the ones in the BIOS.


Since then, I've tested a lot of stuff:
-different bios versions (P3.60, P3.70 and P3.80=
-different PSUs (seasonic prime 850W platinum (the original one) and seasonic focus 1000W
-different VGAs (asrock 5700 and RTX 2060 super)
-removed all SSDs/HDDs, fans, and disconnected peripherals
-reinstalled the CPU
BUT didn't detected any difference in +12V rail (always around 8.9-9.1V)
Nonetheless, I can easily run stress tests and all sort of apps, apparently, without power issues.
So, my question is if any of you have seen a similar behavior ?

Any hints to try to solve this issue will be highly appreciated. I think it might be the related sensor that is bugged or something but..
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