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iMac G4 17" Project
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Dino1956
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PostPosted: Fri Jun 04, 2010 6:57 am    Post subject: iMac G4 17" Project Reply with quote

I picked up an old iMac G4 The Swivel Screen Half Globe Model. It appears to have a dead screen. I bought a mini VGA to VGA Adapter on eBay just to test it & make sure it's not more than the Screen. I get the Apple Chime at Startup but nothing on Screen. Not even a faint glow. Completely Black. Looks the same On as it is when it is Powered Off. So Do you think Inverter or Backlight? Or both? I'll know more when I get the adapter.
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saul
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PostPosted: Fri Jun 04, 2010 6:30 pm    Post subject: Reply with quote

Three things to try to see how dead it is:

1 - Use a bright flashlight to see if there are images on the screen
2 - See if the eject key works. Or hold the mouse while booting
3 - Attach to network. Check router to see if IP address gets assigned
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Dino1956
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PostPosted: Fri Jun 04, 2010 7:15 pm    Post subject: Reply with quote

Nothing with a Flashlight or Lamp. Black as Black can be.
What does that mean?

DVD Drive ejects with KB & Mouse

Have not hooked it to Ethernet yet.
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saul
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PostPosted: Fri Jun 04, 2010 7:33 pm    Post subject: Reply with quote

If you can't see anything with a bright flashlight then it's not just the inverter/backlight. Could be a severed cable.

The iFixit folks might help.
http://www.ifixit.com/Answers/View/12037/Display+not+working.+Why+What+can+I+do
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Dino1956
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PostPosted: Fri Jun 04, 2010 11:06 pm    Post subject: Reply with quote

Saul, that's what I was thinking. Thanks for the Link.
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Dino1956
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PostPosted: Mon Jun 07, 2010 9:26 pm    Post subject: Reply with quote

Ok. So I got a Mini VGA to VGA cable on eBay for $4.00 Hooked a monitor up & all looks good. I was able to do an Erase & Install on the Original 40GB Hard Drive using External Monitor. So now I have to troubleshoot the wiring in the Neck & iMac LCD. If I could just find the loose, snipped or pulled wire, I could get this thing working. I'm not sure how to open the neck. There looked like there was no pulled wires when I took the bottom off & replaced DVD-RW & Hard Drive.
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billb
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PostPosted: Mon Jun 07, 2010 11:33 pm    Post subject: iMac G4 NECK SURGERY Reply with quote

Dino1956 wrote:
Ok. So I got a Mini VGA to VGA cable on eBay for $4.00 Hooked a monitor up & all looks good. So now I have to troubleshoot the wiring in the Neck & iMac LCD. If I could just find the loose, snipped or pulled wire, I could get this thing working. I'm not sure how to open the neck. There looked like there was no pulled wires when I took the bottom off & replaced DVD-RW & Hard Drive.


Hey Big "D".........Here's a Blog that may interest you
or terrify you. In the column on the right, make sure
you look at ALL of his ARCHIVE!!! It will take you
through the trials and tribulations of iMac G4 neck
surgery. Its not for the faint of heart. Don't just look
at his YouTube, look at the ENTIRE Archive. Especially
"March 10----Wire Labeling and Good Fortune".......ENJOY!!!!!!!!!
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Dino1956
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PostPosted: Tue Jun 08, 2010 11:49 am    Post subject: Reply with quote

billb, all I can say is WOW! And Thank you. Great Blog! It looks pretty Scary. But I have nothing to lose. Got the iMac for nothing. Took it apart 2X up to the Hard Drive & DVD Writer. This goes beyond that. I'll definitely tackle this. Although I'm not sure it will be right now. Looks like I need a good amount of time to tackle this. Thanks again for the Link. I'll repost when I make the attempt.
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billb
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PostPosted: Tue Jun 08, 2010 12:25 pm    Post subject: iMac G4 Surgery Reply with quote

Dino1956 wrote:
billb, all I can say is WOW! And Thank you. Great Blog! It looks pretty Scary. But I have nothing to lose. Got the iMac for nothing. Took it apart 2X up to the Hard Drive & DVD Writer. Thanks again for the Link. I'll repost when I make the attempt.


Glad I could help!
Take plenty of digital photos
for the rest of us. You could
help someone else out in the
future.

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Dino1956
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PostPosted: Tue Jun 08, 2010 2:33 pm    Post subject: Reply with quote

Yea I would Post a Video on YouTube but there would have to be a lot of editing done. There would especially be a lot of footage of me scratching my head. Smile
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Dino1956
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PostPosted: Wed Jun 09, 2010 9:28 pm    Post subject: Reply with quote

Ok this is a good one. Today I figured I'd take it apart just to see if there was a loose or cut wire. So I take it apart & after 40 Screws or So, I find nothing. Wires all look in tact. I was so mad throughout this process because I left out like 4 screws & could not get the neck on for nothing. I then put it all back together & realize the DVD-RW is not recognizing my audio CD I just popped in. By this time I'm really fed up. I've had it! So I proceed to take it apart & switch out the DVD-RW. I plug it into the External monitor & boot up. And guess what? Drum Roll Please!!!...I see both Monitors working. I flipped! I literally jumped up & down. Not what I expected at all. I'd love to take credit for fixing it but I can't. Somehow something must have been loose & with all the moving everything around, the Screen came on. Thanks to billb who convinced me it was not the Inverter with his replies. I'm typing on it now. Fresh copy of Tiger, All Updates, Airport Card, 800 MHz. 1GB Ram. Not bad for almost Free.
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billb
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PostPosted: Wed Jun 09, 2010 10:35 pm    Post subject: 2 Gig's RAM Reply with quote

Thats GREAT. You should max out your RAM
for a total of 2GB's. RAM's cheap and that
iMac could use all the help it can get.
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JohnnyBoy
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PostPosted: Thu Jun 10, 2010 7:22 am    Post subject: Reply with quote

Dino1956 wrote:
Yea I would Post a Video on YouTube but there would have to be a lot of editing done. There would especially be a lot of footage of me scratching my head. Smile

Dino1956 wrote:
I was so mad throughout this process because I left out like 4 screws & could not get the neck on for nothing.

Dino1956 wrote:
I see both Monitors working. I flipped! I literally jumped up & down. Not what I expected at all. I'd love to take credit for fixing it but I can't.

Dino, oh man, I love your posts! Laughing Congrats for getting that iMac up and working. Cool
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Dino1956
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PostPosted: Thu Jun 10, 2010 12:54 pm    Post subject: Reply with quote

Thanks Guys! billb, I think 1GB is maxed on this. It's only an 800 MHz. PC133 Ram. I know the newer Models max out at 2GB. Let me know if I'm wrong. I'm glad you enjoy my Posts JohnnyBoy! I always tell it like it is! You can always be sure of that.
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billb
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PostPosted: Sun Jun 13, 2010 2:27 am    Post subject: RAM Reply with quote

Dino1956 wrote:
Thanks Guys! billb, I think 1GB is maxed on this. It's only an 800 MHz. PC133 Ram. I know the newer Models max out at 2GB. Let me know if I'm wrong.


Your correct. That 800 only supports
1 GB officially and unofficially.
HERE'S your link.
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