Question about Apple Power Supply 344 Watt PowerMac G4 Quick Silver (p/n 661-2513) 344-Watt Power Supply

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Powermac g4 will not turn

Switch lights and cooling fans kick but that is all, unit has been unused for some time, but was fine when last used

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  • brian1976 Sep 04, 2008

    G4 quicksilver 733/640. Does start up if left off all day. Stays on for 10 minutes then shuts down. After that, the time between the start up and the abrupt shut down gets smaller. All fans look to be working fine. I have tried everything except replacing the battery and the power supply. Other than replacing the power supply at added cost, how could i repair it myself before handing over £150?

  • postguru7 Nov 02, 2008

    I have a G4 with this same problem. One day the computer went into sleep mode and never woke up. Now when I try to power it on there is just a short kick of the fan but it does not turn on. I purchased a used power supply on ebay and replaced it but I still have the same problem.

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This is a common problem with G4 Quicksilver. Your power-supply is defect and has to be replaced. I have 4 G4s in my lab with the same symptom: a short flash of the power-button light, sometimes it turns on, but mostly the machine is dead.
Richard

Posted on May 14, 2008

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PowerMac G4 M8493. Machine one day started to turn off on its own. The period of time it would stay on got shorter and shorter until the last time it went off, it wouldnt restart. Pushing the power buttun turns the button light on, and the motherboard red light flashes. Thats it, no fans, no hard drives, nothing else. When the powerbuten is not pressed, the light goes out. PMU reset, 3.6v Battery replaced, power cord changed. Same problems. If it is the power supply, how can I be sure. And where can this be fixed for such an old model?

Posted on Aug 19, 2009

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Posted on Jan 02, 2017

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Fuses panel described in English


Hope this helps your out. I know the diagram and locator is a bit blurry but hopefully it gets what you need.
Drivers kick panel:
Front wiper 20A - Front wiper system Cigar 15A- Cigarette lighter Audio 10A- Audio, remote control mirror Air Bag 10A -Air bag diagnostics Stop lights- 15A -Rear brake light, high mounted stop light ECU B+ 10A - Shift lock actuator, transaxle controle module, radio, engine control module Room 10A - Interior light, clock, ignition key reminder, rear cargo area light switch ABS 10A- Anti lock brake system control unit ECU IG1 10A - Transaxle control module, shift lock actuator, ABS control unit, DRL unit Meter 10A - Instrument panel, back-up switch, electronics time control module, inhibit switch Turn signal 10A- Hazard switch ,front and rear turn lights, turn indicator IGN1 20A - Ignition switch ABS 30A- ABS pump motor TNS 30A- Tail light, license plate light COOL/FAN 30A- Cooling fan Cond/Fan 20A- A/C condenser fan Starter 15A- Start signal , Fuel pump Blower 25A- Blower Motor SR/ACC 10A - Ignition switch Hazard 15A - Hazard and turn signal light D/Lock 25A- Door locks ABS 30A - Anti lock brake system control P/W RH 20A- Power window motor right hand P/W LH 20A- Power window motor left hand IGN2 25A- Ignition Switch
Engine compartment :
Head 25A- headlights IG 2 30A- Ignition switch IG coil 15A -Ignition coil, condenser,generator IC regulator, diagnostic connector. O2 down 10A- Rear O2 sensor O2 up 10A- Front O2 sensor Fuel pump 10A -Fuel pump unit Injector 10A -Fuel injector ,camshaft positioning sensor, purge solenoid valve, EVAP, IAC actuator, Mass Airflow sensor, EGR stepper motor. fuel pump relay coil, vehicle speed sensor. A/Con 10A - A/C compressor controls, cooling fan BTN 30A- Brake light , high mounted stop light. Tail light LH 10A- License plate light, tail light , rear combo light, instrument panel illumination Tail light RH 10A-License plate light, tail light , rear combo light, instrument panel illumination Head low 15A- Headlight Head Hi 15A-Headlight Horn 15A- Horn jlmacman.png jlmacman_0.png

Inside kick panel jlmacman_1.png

Mar 07, 2011 | 1995 Kia Sephia

1 Answer

Power mac g5 shows terrible damage in tower from leaking they swear mom board is fine but its hard to believe. are any of the other parts usable for a g3 to g5 imac or g4 powermac or emac


None of the parts are usable in any other machine.
The coolant from a liquid-cooled G5 PowerMac is toxic. If your G5 is leaking, disconnect the power cord IMMEDIATELY. Flush any skin exposed to the fluid with water for at least 15 minutes.
If you want to glove up and extract your hard drive from the machine so as to save your data, do it carefully. Other than that, my recommendation is to bag up the unit and handle it responsibly as toxic waste, using the same guidelines your area uses for antifreeze.

Oct 31, 2010 | Apple iMac G4 Desktop

1 Answer

With the Dometic 3106995.032 thermostat fan switch set to "auto" the fan in the overhead A/C unit comes on (when system is set to "Furnace") as the temperature control is raised but the furnace doen't kick...


Hi, the wiring terminations are near consistent with a 24 volt ac furnace and I will tell you how a 24 volt stat is terminated. RC= 24 volts jumped to RH for red wire only. This would be for a central system with air and heat. W=white for heat, G= Green for Fan, and Y = yellow for cooling. I do believe it is wired correctly for your application. Please verify your units model and serial number and give me a clue as to what is taking place, and did you change the thermostat or make a part change?
Sincerely,
Shastalaker7
A/C, & Heating Contractor.

Oct 19, 2010 | Heating & Cooling

1 Answer

Powermac g4 shut down


OK it's a G4 iMac.
Burning smells coming from macs often indicate a failure in the power supply module. That said, the G4 iMac (in my experience) has been the most reliable iMac ever and power module failures are very rare.
Your best option is to find a Mac repair centre near you and take in in for a quote. But be warned - it will cost. For some reason known only to Apple power supply modules are expensive (but not as expensive as the equivalent volume of HP ink) and replacing them is not as easy as on many of the other computers.
If it is the power supply, you will not be able to switch it on again. Your data on the HD should be safe (unless the smell was coming from that - - I've had it happen!). So when you get to the workshop and you've had your quote, if you decide not to go ahead with the repair, ask the workshop to remove your HD and put it into an external case so that you can plug it in to another Mac and continue using it.
Let us know what the outcome is.

Oct 07, 2009 | Quicksilver Power Mac G4 (Quicksilver)

1 Answer

Transferring software and files from PowerPC G3 to PowerMac G4


to mount somthing in a mac is basicly cutting it on for use.
'
For example if you instal a flash drive or an hard drive via an out side connection, The mac will mount it so you can use it.

Aug 09, 2009 | Computers & Internet

1 Answer

AC unit turns on blower doesn't come on


The thermostat is the controller.

Jun 19, 2009 | Heating & Cooling

1 Answer

Problem with power supply


The motherboard might be shot would be my guess.

Nov 02, 2008 | Apple Power Supply 344 Watt PowerMac G4...

1 Answer

Monitor does not come on


The video card you used may work for the 2nd computer but not for the 1st because of the system requirements. They might be different simply because they are different models. check which video card is RECOMMENDED, NOT MINIMUM, and get the recommended video card.
However, if it is the right video card, then get it checked at a pc shop, like pcworld or somewhere like that and see what they think of it.

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Mac g4 heatsink


try adding pci slot fans to keep it cool. You can find them on ebay and places newegg.com or any other computer place

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