Brand New AM4 - Power On Pins Details £
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=104848
Printed Date: 04 Apr 2025 at 7:08pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Brand New AM4 - Power On Pins Details £
Posted By: nullbar
Subject: Brand New AM4 - Power On Pins Details £
Date Posted: 03 Apr 2025 at 3:57am
==now without typing error===
To rescue an old AMD A6 9500 chip and a power supply with ATX 20 ATX pins, I purchased an AS RockA520M. Problem: not starting.
Is it right, that when the Power-On-Button is pressed (= 2 Pins at Panel1 are shorted), the motherboard should connect the Green and a Black cable coming from the Power Supply ?
I think so, because when I test the 20pins of the ATX cable with my multimeter, there are no voltages there if i do not short the green to a black cable with a little wire. And if they are shorted, than the Voltages come right and also the fan of the power supply is running.
But the two pins on the ASRock board, that shall be connected to Power On Button are not just briding the green and the black, which I tested too. Maybe they should and that is a failure of the brand new board ?
I am a bit clueless, have taken out almost all other components (not the CPU) and may just send it back to the seller.
Asked differently:
If the motherboard does not start the power supply fan, if the Power-On button works, then the mothermoard is broken,right ?
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Replies:
Posted By: eccential
Date Posted: 04 Apr 2025 at 1:36am
I highly doubt A520 (or any 500-series) motherboard would support A-series APU (Bristol Ridge) from that long ago. In fact, even the 400-series motherboards now come with updated BIOS that do not support Bristol Ridge chips, so unless you can find an old 300 or 400 series chipset motherboard with _old_ BIOS, you won't be able to make use of that A6 APU.
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