You also need to short\jump pins 8/9 on the ATX PSU.I have recently purchased the dsatx and brainstem.
I am bench testing everything right now, so here is my setup for the dsatx:
- Similating atx power by jumping pins 13/14 on atx power supply.
- Attached a switch from acc on dsatx to 12v on molex
- ground from a molex
- running vin to 12v molex
When i power up the dsatx it seems i never hit post. I get it to boot up probably once every 10 times. Everytime i boot from the dsatx a solid red lite is on and then i get no vga signal on my monitor.
I tried it on another computer and boots up fine with vga everytime. So, looks to be a problem with compatibility with my motherboard and the dsatx or something. I am using a MSI motherboard running an amd xp processor.
Also, with the brainstem hooked in i get a solid led, but when i give it power the dsatx doesn't get power it seems, no blinks nothing. When i disconnect the brainstem the dsatx boots up fine.
I know i have it in the right way, bucasue if i put it in the otherway the led flickers and doesn't get reconize on startup, but am able to boot.
Maybe i hot plugged the brainstem and need to reset it, which i havent' done yet, but wondering if i'm doing something or maybe its my motherboard. Even if i did hot plug the brainstem, shouldn't it still boot and just act weird?
Just wondering if anyone has experienced this with either situations above?
Also, i have tried 3 atx power supplied to similate power, but i could only get one of the atx psu to works. With the other 2 the dsatx doesn't get power which is weird. I used a volt meter to test the volts on the psu that worked, so will test the other 2. Thought that was weird..