Mobo won’t run when ATXPWR2 connected to PSU

Mining & Hardware
#1

Hey All,

When I connect the PSU peripheral connector to the motherboard ATXPWR2 the motherboard stops running. If I remove the connector from the ATXPWR2 the motherboard runs.
I need some trouble shooting advice/recommendations?
PSU Thermaltake 1200 Gold 80
Mobo Biostar TB250-BTC

#2

Are you using the dual 4-pin connector that is hardwired to the PSU or are you using a cable plugged into a modular peripheral port?

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#3

Hey bick0012, I’ve tried the direct hardwire 8-pin and a 4-pin to peripheral connector port.

#4

I don’t have an SSD or USB stick in. But that should matter- correct?

#5

You should be able to get into the BIOS without an SSD. The hardwired cable marked CPU that can split into two 4-pins is the one to use. If that doesn’t work, it could be a bad power supply or another cable causing the issue. If you used any adapters or non-Thermaltake cables elsewhere, that could be the problem too. You should also power the two molex connectors on the board but that shouldn’t matter for this issue.

#6

The mobo will run with the 24-pin but as soon as I add the 8-pin or 4+4 pin to the ATXPWR2 the mobo runs for about 2 seconds then quits.

#7

I believe this has to be a mobo issue as once the ATXPWR2 has power, with or without AUXPWR or SATAPWR, the unit shuts down after a few seconds.

#8

It certainly could be the board. My TB250 did the same thing when I used a non-EVGA cable with an EVGA PSU to power the two molex. It would start for a couple seconds and shut down. Hopefully you have access to another board or PSU to test them out.

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#9

I am having a very similar issue did you ever get this solved?

#10

Hi, MeatyMouse,
I’m ashamed to say I had a 9th gen intel in the mobo.

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