iMac G5 iSight 20" won't start ?!

[acidfan]

hi all,
not the first one with this problem but i couldn't find any solution.
i have an imac here which won't start when i push the power button. nothing happens. there is no noise, no fan, no flashing on screen or something else. i already opend it and checked the 4 LEDs on the logicboard. nothing to see there too. the only thing i noticed is, when i connect the power supply i hear an short noise coming from the PSU, i think and one (i think the first) LED flashes one time. also tried to push the internal power button, without success. noticed NO exploded or damaged capacitors on PSU and Logicboard (but i think thas more a problem of older G5).
so any idea what else i can try or how to test the PSU?


thanks all, hope you understand my english

 

[zmttoxics]

hi all,
not the first one with this problem but i couldn't find any solution.
i have an imac here which won't start when i push the power button. nothing happens. there is no noise, no fan, no flashing on screen or something else. i already opend it and checked the 4 LEDs on the logicboard. nothing to see there too. the only thing i noticed is, when i connect the power supply i hear an short noise coming from the PSU, i think and one (i think the first) LED flashes one time. also tried to push the internal power button, without success. noticed NO exploded or damaged capacitors on PSU and Logicboard (but i think thas more a problem of older G5).
so any idea what else i can try or how to test the PSU?


thanks all, hope you understand my english

Sounds like a bad PSU, could be bad logic board too. My recommendation? Take it out back to the barn and put it down like Old Yeller.

 

[donuttakedonuts]

yeah, unless (somehow) you still have applecare on it, it's probably a dead computer.