tutorial - reviving a Mac G5 with dead PSU

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • lavabo
    New Member
    • Sep 2014
    • 2
    • canada
    #1

    tutorial - reviving a Mac G5 with dead PSU

    Hi All

    A friend o mine had a Mac G5 with defective PSU and the mac was not booting.

    I had the idea of using a PC AT PSU and moved the pins to the mac connector. Ive found a few diagram about other people that have done it.

    PC ATX have 24 pins, Mac connector 22.
    For the 24 Volt, i used an old HP LAserjet 4 plus PSU, and the 24 V is on the Jumper 103, Blue and red wire. I connected those to the 21-22 mac connector as displayed on the pinout.

    here are some pictures:

    Mac booting


    Connector from PC and HP PSU


    Explanation of the measured voltage :


    Both PSU


    I used those picture from other to reuse my pinout




    Its now working great but a bit bulky with 2 PSU on the back! I should have used molex connector to disconnect PSU from the back but hey, my friend wanted to be cheap, it cost him only 2 beer.
    Last edited by lavabo; 09-19-2014, 12:59 PM.
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • szelda
      Walkom NP-903 Charging Connector Pinout
      by szelda
      Hello everyone,
      I'm looking for assistance with powering on a laptop that also goes by the names Modern Computer Corp NP-903 or NoteStar NP-903. I don't have the original charger for it, and I'm unfamiliar with the connector type. I'd be very grateful for information regarding the pinout, specifically where to connect the positive and negative leads for a DC 12V 2.5A power supply.
      4 Photos
      11-01-2025, 07:22 AM
    • pickledegg
      Dell Inspiron 7501 / Vostro 7500 (2020) - eDP connector pinout/panel compatibility question
      by pickledegg
      Hello. I have an Inspiron 7501 here, it's the same as a Vostro 7500 in some markets (no clue). I was looking to replace the LCD, the panels included with these models are terrible.

      I have the schematic and it is a 4 lane eDP port on the board but the pinout seems quite weird, my question is if anyone recognises this weird pinout and knows of any other Dell models that may use it or even any compatible panel models. I have the 40-40pin cable that was used for the models with touch but do not need touch capability, was just looking for a better quality screen and higher refresh to actually...
      10-02-2024, 04:54 PM
    • AlexVG
      SAMSUNG UE65HU8500 ONE CONNECT pinout connector request
      by AlexVG
      Hi,
      I came across with
      SAMSUNG UE65HU8500
      ONE CONNECT BN41-02135
      Chassis GOLF_UHD_1MP_JACK

      TV can not recognise ONE CONNECT box, so I need to know the pinout of the CN 3301 connector.
      Moreover, on the main is written A5V. However, cable connected this pin to the GND.






      Maybe somebody have an experience with the same issues?
      I need your help.
      Thank you....
      06-08-2025, 06:49 AM
    • Tomylee
      No LCD image after connector replacement – lifted components and damaged resistor (Nintendo Switch Lite HDH-CPU-02)
      by Tomylee
      Hi everyone,

      Sorry for the person who’s going to read all this !
      I'm on a Nintendo Switch Lite, motherboard HDH-CPU-02.

      While replacing the left joystick, I had to remove the motherboard to access the connector underneath. When I lifted the LCD connector latch, it broke (the plastic had become brittle over time), so I replaced the entire connector.

      During the desoldering of the LCD connector using hot air, three small components located just below the connector (likely 0402 capacitors) came off and remained stuck to the bottom of the...
      07-11-2025, 11:52 AM
    • 5mall5nail5
      Help identifying connector for ASUS 4090 Strix RGB LED connector
      by 5mall5nail5
      Hi All -

      I had replaced my ASUS 4090 Strix cooler with a waterblock and put the stock cooler on the shelf. Was moving it and snagged my sweater on the connector and pulled the wires out of the pins on the RGB connector. I tried to get them back on but its too small so I opened the stamped pins and tried to solder but its not a good repair and the wire broke on reinstallation.

      Looking to replace the connector on the cable side and get pins to crimp onto a new cable. Bought random JST and such but nothing is correct. Can anyone help identify the connector and possibly matching...
      05-04-2025, 07:47 AM
    • Loading...
    • No more items.
    Working...