Reply To: Added ATX PC Power supply, mosfets now crazy hot

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Wow so I’m an idiot, I didn’t realize that the second negative spot on my heated bed had to be hooked up.
I looked at the directions on the board which indicated 1 was positive and 2 and 3 were negative and took that to mean I could hook up either not both.
Turns out 2 is the top half of the board and 3 is the bottom half which is why my top half was crazy hot and my bottom half was cold hence the slow heat up times and never being able to reach certain temps.

I soldered 2 and 3 together with a short piece of wire and bam the bed heats up quick now and evenly.

Always learning something new. 🙂