I hope this is not off topic here, but I have a PC with a 900w ATX PSU (Be Quiet! Dark Power Pro 8 900W). I have it set up in my PC with motherboard, GPU and case fans connected to it. I`m now connecting some more case fans, which seem to cause some problem.
The PSU has 5 12V connections specifically for case fans. Each case-fan output I use to drive some fans. I cant make out from the sticker on the back for which amperage those outputs are rated, but I assume it to be sufficient for several case fans.
I have one set of 5 50mm fans (Revoltec Airguard, rated 0.08 A at 12V). I first connect them together in parallel with some 'jumper' wires. I then connect them to the one 12V case fan output that was still free. When I switch on the system it continuously tries to switch on but seems to lose power and then tries to switch on again. This does not occur when I disconnect these fans that I just added. This behaviour really puzzles me, I cant imagine these small fans draw too much power.
What could be possible causes for this behaviour?
Things I`m thinking about are: Am I connecting these fans incorrectly? Could connecting 5 fans in parallel cause some kind of surge at boot? Could one of the fans be shorting out? I dont know how to approach this.