Hi im a pc technician i have worked as a tech for over 5 years and Iím quite stuck I have just bought a Power Mac G5 that was not working to try to familiarise myself with the systems but Iím having little luck repairing the issues which are
ē System powers on but no beeps or sounds just a blank screen ē Fans run at normal speed then start to spin very fast (as if there is a heat build-up)
When I received the system the video card was not seated correctly
ē I have a DVI cable that only fits in to the smaller DVI port Labelled 2. Do you need an adapter for the larger port to DVI to use on a non Mac monitor?
If you're talking about the video connector with the rounded ends and the two metal clip things on the ends, it's an ADC port. There are adapters, a bit pricey, but the DVI will work.
To see if it's powering up fully, which I doubt because of no p.o.s.t. (startup chime) and the fans spinning up, (the fans ramping up are usually a symptom of a bad logic board or processor(s), a fail-safe so the machine doesn't fry when there's no software controlling the fans) after it boots, hold down the Control key and push the Eject key, usually in the upper right of the keyboard. Then push the Return or Enter key, the machine should shutdown under normal operating conditions.
aantalip: 0 Serial number: CK411HQYQVJ Model: M9032 PowerMac G5 2.0GHz-DP model=g5 Group1: PowerMac Group2: Generation: Bus speed: 1.0GHz Memory - number of slots: 8 Factory: CK (Cork, Ireland) Production year: 2004 Production week: 11 (March) Production number: 20500 (within this week)
thank you for your reply I Have reset PMU but still no video
Power-On Self Test: RAM and Processor Verification
A power-on self test in the computerís ROM automatically runs whenever the computer is started up after being fully shut down (the test does not run if the computer is only restarted). If the test detects a problem, the status LED located above the power button on the front of the computer will flash in the following ways*:
1 Flash: No RAM is installed or detected. 2 Flashes: Incompatible RAM types are installed. 3 Flashes: No RAM banks passed memory testing. 4 Flashes: No good boot images are detected in the boot ROM (and/or there is a bad sys config block). 5 Flashes: The processor is not usable.
* Note: The status LED lights up when the power button is depressed at startup. Do not count this light as one of the diagnostic flashes.
If it lights up then stays on with no additional flashes, it's probably the logic board.
Verify that the processorsí mounting screws are properly tightened.
Your model may be started up and diagnosed with a single processor installed in the upper processor slot.
Remove the processors, the heat sink comes out with the processor, they are one unit, and check for damage to the logic board under the processors. If you see damage/leakage replace the logic board.
Replace the upper processor. If it doesn't boot remove it and put the lower processor into the upper slot and try
If that doesn't work, next check for trickle voltage on the power supply connector.
You should be getting 5 volts from pins 1 to 23. Pin 1 is on the side opposite of the clip, on the end opposite the empty holes. 1-12 run down one side, 13-24 the other, 1 across from 13. Pin 23 is on the end with the empty holes, on the side where the clip is. You can remove the P1 connector from the board and remove the black cover to check it.
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