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Blank screen but working

1628 Views 17 Replies Latest reply: Jun 15, 2012 1:24 PM by OS 9.1 is the best!!! RSS
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OS 9.1 is the best!!! Calculating status...
Currently Being Moderated
May 20, 2012 1:03 PM

Hello

 

This is a thread I read in many sites on the net but I'd like to know if someone would have an idea to fix the problem

 

I have  a friend who wanted to sell me her IBOOK G3 800mhz 14 inch , when I tried it it was running perfect except a bit slow.. then she called me later on to tell me the screen went black and she already gave it to repair cos it comes from the video card.

 

I did what I read on forums etc.. on google. Applied metal parts under the GPU which runs very hot like the Wallstreet powerbook (the piece of art) . The screen then started to blink trying to switch on. I even had it blinking with straight color lines...

 

Pressing the side of the Track pad won't do anything at all

 

I started it with the T mode on my cube and it works perfect! I even Techtooled it but I can't do the test with video etc since I'm using the cube. SO the comp works fine.

 

My question is after I tried most things have u got other tries before I dessassemble it completely?! is the screen dead or just a part of the motherboard cos if it's working without the screen...

 

when turned on every keys works and wait for u to type the password. The only ones that don't work are the bright ones (since it's related to the screen)

 

thanks for reading.

Imac DVSE ,Cube , Powerbooks (150-Wallstreet -Clamshell SE) G4 Dual 450/1.8G, Mac OS 9.1.x, OS 7.1-7.5-9.1-9.2-10.1-10.3-10.4 - Airport snowDual base statio
  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    May 20, 2012 8:18 PM (in response to OS 9.1 is the best!!!)

    Have you tried resetting the PMU?

     

    http://support.apple.com/kb/HT1431?viewlocale=en_US

     

    Perhaps the shim you placed was a bit too large? The specific suggestion is to use a Scotch mounting square instead of metal for the shim.

     

    [Y]ou can often fix this yourself by removing the iBook's bottom housing, and placing a shim of any sort, about 1mm to 1.5mm thick, onto the raised square on the bottom shield. I use a Scotch mounting square--you can get them in hardware stores and many grocery stores. When you reinstall the bottom case, it will press against this shim, which will press against the graphics chip, and may allow the chip to come into better contact with the logic board.

     

    John Sawyer CJS Macintosh

     

    Repair Instructions for removing the lower case:  iFixit.com

  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    May 21, 2012 1:48 PM (in response to OS 9.1 is the best!!!)

    It could be that the logic board will have to be replaced.

     

    It could also be that the backlight cable has broken or the reed switch is stuck (not uncommon occurrences, and fairly easy fixes).

     

    It could be the display data cable.:

     

    http://www.ifixit.com/iBook-Parts/iBook-G3-14-Inch-Display-Data-Cable/IF151-023# .T7qpxM0Wmj4

     

    or if it's gone completely black, it could be the inverter:

     

    http://www.ifixit.com/Mac-Parts/iBook-G3-14%22-Model-A1007#0-Inverters

  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    May 23, 2012 2:02 PM (in response to OS 9.1 is the best!!!)

    I would suggest replacing the inverter cable and reed switch assembly first:

     

    http://mac.macrecycling.com/inverter-cablereed-switch-ibook-g3-14-p-100176.html

     

    They are out of stock on them, but as long as you have the part number, you can enter it in a Google search box and get results from other places.

     

    I found this one:

     

    http://www.gainsaver.com/Catalog/Detail.aspx?&cICode=129803

     

    Make sure they will guarantee that it is not dead on arrival. (Most places will offer a 90-day or 6-month warranty on a used part.)

     

    Good luck.

  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    May 24, 2012 9:11 PM (in response to OS 9.1 is the best!!!)

    /___sbsstatic___/migration-images/184/18474659-1.png

     

     

    I hope that's all it takes. This is the most commonly encountered problem.

  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    Jun 1, 2012 2:33 AM (in response to OS 9.1 is the best!!!)

    So sorry that didn't do it.

     

    Please do let us know when you figure out what the trouble was and how you fixed it.

  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    Jun 8, 2012 11:03 AM (in response to OS 9.1 is the best!!!)

    That iBook is nearly ten years old. Lots of people are still using their iBook G4s, just as you are using your Wall Street and clamshell models. Users usually just don't come here and say, "Woo-hoo! My iBook G4 works." No, they come here looking for solutions to problems. Sometimes we can help; but sometimes we can't. We are disappointed when things don't work out, too. But things do wear out.

  • Ronda Wilson Level 8 Level 8 (40,555 points)
    Currently Being Moderated
    Jun 9, 2012 1:15 AM (in response to OS 9.1 is the best!!!)

    If it's still working, just not without the display, you could always hook it up to an external monitor if you really need to use it. This assumes that the port to do that is still working.

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