xbox v1.0 with xecuter 2.3 pro not powering on

[jbelvin]

I got an xbox v1.0 motherboard with an xecuter 2.3 pro modchip that was not working. I took it apart and found the d0 wire was loose, so I resoldered that connection and hooked everything up and the system ran fine for about 4 hours, at which point I powered everything down and went to bed. this morning I go to power on the unit and the blue lights on the modchip light up and the fans spin for a second, but no lights on the front panel and nothing else happens. the capacitors on the power supply and near the psu connector on the motherboard all look fine. not sure what else to check, so any help would be appreciated. Also, the clock cap was removed before I got the xbox, presumably when the modchip was originally installed