Recent content by imarco88

  1. imarco88

    MacTester57's HemiMac G4

    Yes, backlight and inverter are working, I didn't touch monitor cables. I really don't know what went wrong... everything worked great (I used the iMac as external monitor for months) but yesterday, before closing the dome to complete the airport express mod (which in testing worked too), the...
  2. imarco88

    MacTester57's HemiMac G4

    Good morning. Yesterday I had some time to mod again my iMac G4, placing an airport express inside it, but, I really don't know how, now I have a burned airport express and a burned iMac LCD panel (there are big white rectangles on the LCD). Do you know where could I buy the LCD panel? Is...
  3. imarco88

    MacTester57's HemiMac G4

    Just found out what the problem is: simply electrical interferences from the DVI source. They show because, due to the (stupid) VEDID 3.3V iMac LCD wire, the LCD is always on. I left my macbook doing its time machine things: the macbook monitor went black, iMac's monitor too, but full of...
  4. imarco88

    MacTester57's HemiMac G4

    I still think the inverter red wire should be wired on the PSU 5V, I believe it requires more amperage than the DVI source can supply.
  5. imarco88

    MacTester57's HemiMac G4

    Could the HDMI cable quality/length be the cause of this?
  6. imarco88

    MacTester57's HemiMac G4

    Thank you MacTester. As soon as I will have some time to open it, I'll try again to put the transistor after DVI pin 14. I'm assuming I burned the last one because I forgot to place the 1Kohm resistor :banghead: I just noted that the iMac LCD does some lines when I wake it up from "sleep". I...
  7. imarco88

    MacTester57's HemiMac G4

    If you're going to open it, could you please check DVI Pin 14 (VEDID) Amperage? I believe I burned a transistor :thumbup: At the end I installed a push switch button on the PicoPSU jump. My iMac as external screen works really good, but one day I will try to avoid this button switch
  8. imarco88

    MacTester57's HemiMac G4

    Since I'm getting rid of the DVI VEDID wire (I'm wiring the whole monitor to PSU) I'm having a probably stupid idea: use DVI pin 15 (ground) or DVI pin 16 (hot plug) for grounding PSU PS_ON, in order to switch the PSU ON when a DVI source is connected and off when it's not. Do you think this...
  9. imarco88

    MacTester57's HemiMac G4

    That's why I believe it's better to plug the inverter red wire directly to the 5V PSU. I don't know if during his inverter investigation MacTester saw how much amperage does the inverter require, but probably more than the VEDID source provides. If so, on the very long term, it could brake the...
  10. imarco88

    MacTester57's HemiMac G4

    I thought to plug the red inverter wire to the 5V PSU just because the LCD won't be anymore VEDID-dependent (since I'm gonna plug pin 15 into PSU 3.3V), I don't see why the inverter should be :). Anyway, PSU or VEDID, both are 5V, I think it's just a matter of Amperage. Since I'm not interested...
  11. imarco88

    MacTester57's HemiMac G4

    So I assume these 5V comes from my DVI source (in my case a macbook pro) That's the main point :) I believe that the display was done to be always on, like a laptop display. So I presume that LCD pin 15 should be hooked with the other LCD power supply wires (Pin 22 - 24) to 3.3V, and then move...
  12. imarco88

    MacTester57's HemiMac G4

    Hi, first, congratulation for your iMac G4 mod. Really professional. Impressive. As you, I was reading dremeljunkie blog for iMac G4 mod, and decided to transform mine into an external monitor. All worked great, but as soon as I closed the dome I was doubting about the PSU and LCD-Inverter...
Back
Top