MP 1,1-5,1 Mac Pro 3.1 working weirdly

[Kwan_wesley]

Hi guys! I’m a little troubled here and after a while, a guy on Reddit recommended me to ask here…I got this Mac Pro 3.1 from a friend, half the ram sticks were fried, I purchased new RAM, the pc most of the time works fine, but at random, when I turn it off and then on, I just here a click from the psu and nothing more, not even the power light, if o let the psu cable connect overnight, the mac won’t power on on the next day, if I press the power button and connect the psu cable, I got the two RAM riser led, I don’t know which way to go, when the Mac works it just works for the full day, sometimes it just goes days working normally

 

[Bigwaff]

Sounds like you need to start swapping parts... starting with the PSU.