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  1. #1


    Member Since
    Jan 13, 2012
    Posts
    6
    Unhappy PowerMac G5 Quad logicboard with broken pin -> front panel
    hi

    Sommeone give me a PowerMac G5 Quad 2.5Ghz (late g5), I cleaned it, and i saw some pins from de logic board (in blue pic1) are broken.
    These pins are used for the front panel (power + led, audio, usb & firewire)



    Here are pinout:

    01 02 03 04 05 05 06 07 08 09 10 11
    12 13 14 15 15 16 17 18 19 20 21 22

    Audio
    USB
    Firewire
    Power(bouton)/LED
    ?

    01: Audio left
    02: Audio gnd
    03: Audio right
    04: ???
    05: FIREWIRE gnd (double)
    06: USB VCC (+5V)
    07: gnd
    08: gnd
    09: FIREWIRE TPB-
    10: FIREWIRE TPB+
    11: LED
    12: Firewire FW802C IC VDDA (+3.3V)
    13: ???
    14: gnd
    15: FIREWIRE VCC (double) (+12V)
    16: gnd
    17: USB D-
    18: USB D+
    19: GND
    20: FIREWIRE TPA-
    21: FIREWIRE TPA+
    22: Power (bouton)

    My questions:

    1- Can it be repaired and how?
    2- Power function seems to be ok, can I use this powermac right now?

    Thanx

    ps: sorry fo my bad english

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    47,089
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    Your English is fine. I would think you're going to have to replace the logic board. There is no way you can re-solder or repair the broken pins. There are probably G5 machines around that are selling for parts on eBay and maybe even local to you. You may be able to buy one at a very low cost and cannibalize the logic board from it.

  3. #3


    Member Since
    Jan 13, 2012
    Posts
    6
    First of all thanx chscag for your answer
    You have just confirmed what I thought (can not be repaired)
    Destroyed pins are 6, 7 , 8 ,9 10 and 11 which are in part for audio, usb, firewire and led power.
    Pin 22 for power is ok, can't I use this powermac without connecting anything?
    Will it be dangerous to try?
    Thanx
    BuShiDo...ThE WaY Of SaMuRaĻ
    - G4 sunflower 15" 800Mhz, ram 1Ghz, hd 160Go, - G4 sunflower 17" 1Ghz, ram 2Ghz, hd 500Go, - G5 flatpanel 17" isight, 1.9Ghz, ram 1Go, hd 160Go, - G5 powermac quad 2.5Ghz, ram 2.5Go, hd 320Go

  4. #4

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    47,089
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    Probably not dangerous to try, but be careful anyway if you see smoke or detect a burning odor. And since you got it for free, you've nothing to lose.

  5. #5


    Member Since
    Jan 13, 2012
    Posts
    6
    Thanx,
    I may get the ac power cable tomorrow, then I will try
    I will write my conclusions then.
    BuShiDo...ThE WaY Of SaMuRaĻ
    - G4 sunflower 15" 800Mhz, ram 1Ghz, hd 160Go, - G4 sunflower 17" 1Ghz, ram 2Ghz, hd 500Go, - G5 flatpanel 17" isight, 1.9Ghz, ram 1Go, hd 160Go, - G5 powermac quad 2.5Ghz, ram 2.5Go, hd 320Go

  6. #6


    Member Since
    Jan 13, 2012
    Posts
    6
    Hi
    I plug the ac power in, push the power...nothing
    After resetting SMU > http://support.apple.com/kb/HT1436, and PRAM/NVRAM > http://support.apple.com/kb/HT1379?v...n_US.....bingo, it works like a charm
    Fresh Leopard install done...Simply Great
    Thanx for all
    BuShiDo...ThE WaY Of SaMuRaĻ
    - G4 sunflower 15" 800Mhz, ram 1Ghz, hd 160Go, - G4 sunflower 17" 1Ghz, ram 2Ghz, hd 500Go, - G5 flatpanel 17" isight, 1.9Ghz, ram 1Go, hd 160Go, - G5 powermac quad 2.5Ghz, ram 2.5Go, hd 320Go

  7. #7


    Member Since
    Apr 29, 2012
    Posts
    2
    Power connection
    Good morning, I registered just to check on the front panel connections.
    From what I noticed, the pin 22 is the Power, but he alone? Or was he and 14, which is the gnd?
    In my case, I have a PM G5 in which there are only 18 pins in total. Is it the power is 18, taking reference to the drawing, 22 is the Power.

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