This is one of several pc's used as terminals in restaurant. They have some gx270's and 280's. This one was an extra unit that they had. The replacement motherboard was ordered off of E-bay and was supposed to be new, but you know how that goes.
When the main connector (20 pin) is connected to the board, the mobo led comes on, but no response when I try the power switch. If I hook up the 20 pin to the tester while all other power supply leads are connected (hard drive, etc.) the power supply fan comes on and the hard drive spins up. I'm thinking it could be as simple as a bad power switch, which I will try, but I was wondering if there is anything I am missing.
Thanks for answering my post
Frank