Psu and Maiboard Socket Confussion in Predator PO3-640

axmet

I am writing to gain some knowledge about differences socket types of Acer predator desktop product. My computer had an issue with psu and i wanted to replace it with the new one. When i opened the system i shocked with the scene. There was no 24pin socket on the mainboard also cpu socket 4+4 is not suitable with new psu's socket. first 4 pin socket is okay but the second pin needs to be rotated 90 degrees to plug in it otherwise its not incompatible. How can i resolve these issues.

[Edited the thread to add model number to the title]

billsey

You haven't told us which Predator model you have, and we can only infer that it's one of the versions that uses an ATX12VO power supply to meet Intel's branding standards. If so, you can't just buy any off the shelf power supply, you need one that only does a single 12V rail and provides enough power on that for all the system needs. Your best next step is to return the incorrect PSU and choose the correct type for your model. Since there are very few third party supplies for the ATX12VO designs it's usually easiest to just get a replacement stock supply. We have to know what machine you and how it's configured have to recommend one though. Your full model number is usually on the same sticker as your serial number, it should look something like POx-xxx-xxxx. Is the existing supply a 300W, 500W, or something else?

axmet

https://community.acer.com/en/discussion/comment/1288727#Comment_1288727

I am sorry to miss that the serial number of the product is PO3-640 ı512-14)

billsey

So yes, your Predator uses an ATX12VO power supply. Here is the MB layout:

And those are the pinouts of the power connectors. Your system came with a 500W supply, which is fine with all the different cards they ship with. What size are you trying for? How handy are you with creating custom cabling?

axmet

https://community.acer.com/en/discussion/comment/1289016#Comment_1289016

Actually, i am not trying to improve or update any system hardware. Recently, i have been facing with the system reset problem. Whenever i opened a game or while gpu has a load system reset itself. I thougth the the issue has happened due to the high temperatures but i was wrong. Currently i have two option, one gpu has problem but there is no other issue with it. So, i concluded that psu has completed its life time. Currently i am trying to run the system with different psu to check that problem is issuees lack of power.

Edit: I can say that i am handy person on electronic parts. So custom cabling is not a big issue for me.

StevenGen

https://community.acer.com/en/discussion/709864/psu-and-maiboard-socket-confussion-in-predator-po3-640

Just some further info for you about the board, as below is the full placements of your Predator PO3-640 mainboard, this board has an Acer proprietary board and a proprietary 500W PSU and it does NOT have a 24pin ATX_POWER plug, this board has in the diagram below at #5 an ATX_POWER - 6-pin ATX power connector and at #21 an ATX_12V1~2 - Auxiliary 8-pin power connectors.

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billsey

OK, if you are up to doing the cabling you can use the +12V, GND and PS_ON lines from a 24 pin connector on an old style ATX power supply to populate the 6 pin connector for your motherboard, then use +12V and GND to populate the two 4 pin connectors as well. As long as the PSU you are working with has a decent amperage rail for the 12V power you should be able to at least test with a different supply. Temporarily you can just pull the pins from the 24 pin socket and plug them into the appropriate pins on the MB, being extra careful to connect them correctly and, of course, not while anything is powered. The PS_ON goes to the power button, the other side of the power button goes to the return GND for that connector.