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maxshanly

macrumors member
Original poster
Jun 12, 2007
59
1
My friend is giving me an old iMac G3, I thought it might be a good idea to do an LCD conversion.

I was just wondering if anyone had a detailed diagram of the wiring that I need to do for video and power adapters?

I shall await a reply.
 
Open up a 15" flat panel, connect it with the iMac's internal VGA port, toss the CRT crap (be careful!) and voilà! (probably)
 
Does this mean the imacs current CRT screen is connected to the motherboard with an internal vga? In theory could you take a mac minis guys and use a dvi-vgi converter and plug the crt into the mini? Just curious. I think that would be sorta neat. :)

Then again i could just take a case and put the mini in there and a new LCD or something, but i think the original crt would be sort neat to have in there with different guts...
 
I have finally got the iMac, I am going to try it out tonight. Does anyone know exactly where on the motherboard is the VGA port and once I plug in the LCD will it work right out of the box?

Is there any hackadackery required?
 
Open up a 15" flat panel, connect it with the iMac's internal VGA port, toss the CRT crap (be careful!) and voilà! (probably)
You mean *recycle* the CRT crap. It is now illegal in all 50 states to throw a CRT in the trash. The average CRT contains 9 pounds of lead, some mercury, some arsenic, and some other nasty things.

Don't be a bonehead - take it to a recycling center.
 
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Will the iMac G3 (350 MHz Slot Loading) take PC133 RAM?

Looks like it does. I have installed 1 GB of RAM into the iMac (2 x 512 MB), it is running rather snappy. I've booted into the Mac OS X Tiger CDs that I got from work (I do own a family pack for Tiger but this Mac doesn't have a DVD Drive so I needed CDs to install from). It hasn't made a fuss over the fact that the Mac is unsupported (it doesn't have a FireWire port) and I am not using XPostFacto so it looks like it is going to work just fine.

I'll make another post once the install is finished, I've just got to run downstairs and get some toothpaste to fix the scratch on the glass. I shan't be putting in the LCD for a while, not until I've got another iMac to test the method on.
 
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The 350 MHz Blueberry slot loading iMacs are the same as all of the other ones except for the Firewire port and no DVD drive, so that is why Tiger still works fine. :apple:
Double check the connecter inside the computer. It may not be a regular VGA connecter. Some iMac G3's internal connecter is the old style Macintosh Monitor connecter. I'm not totally sure so don't automatically assume I'm right...:eek::apple:
 
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Yes. What you are proposing is possible (G3 iMac rebuild with LCD flat screen). BUT it's not just the screen that would need changing, you'd have to gut the G3 and add compatible hardware - certainly not just a compatible power adapter! One could even add a Mac Mini inside, but even that mod to connect up to an LCD screen requires some serious engineering. Don't let anyone tell you otherwise. There are one or two clever guys who have accomplished this, but it's a serious mod - it ain't no weekend project! If it was, I would have done it with one of my iMac G3's......
 
Uhm…thread is over seven years old. OP has probably long ago moved on.

Although the info in your post is appreciated.
 
I know this is old, so don't flame me, but I'm thinking of doing something like this eventually, with the twist being that I will take everything MAC related out, and put modern components in it, and then yes, run...
**Drumroll please** Windows!!!

I know, it's a mac at heart, but I love my Windows 10, and other versions as well, and love the iMac look, so I decided to try and put the two together... to be clear, even though I found a 1 minute clip of exactly that on youtube, I had the idea way before the video I found was even posted, I forget exactly, but I think my last iMac was green??? Or was it blue... My current one's color is whatever the last one I took apart wasn't, and honestly, It's also a little brown in a few spots, because I accidentally dripped a little wood stain on the case while it was in storage... My only problem is going to be what kind of cd/dvd drive to replace it with...
 
I know this is old, so don't flame me, but I'm thinking of doing something like this eventually, with the twist being that I will take everything MAC related out, and put modern components in it, and then yes, run...
**Drumroll please** Windows!!!

I know, it's a mac at heart, but I love my Windows 10, and other versions as well, and love the iMac look, so I decided to try and put the two together... to be clear, even though I found a 1 minute clip of exactly that on youtube, I had the idea way before the video I found was even posted, I forget exactly, but I think my last iMac was green??? Or was it blue... My current one's color is whatever the last one I took apart wasn't, and honestly, It's also a little brown in a few spots, because I accidentally dripped a little wood stain on the case while it was in storage... My only problem is going to be what kind of cd/dvd drive to replace it with...
This has actually been done several times. If you go this route I hope you find a non working iMac. Fyi, a “[?] blinking folder or disk” is not none working. (Just because I see that a lot on craigslist or eBay as not working)

I found these on google:

Obviously this would be a PC in a case so you could run whatever OS you wanted. Including Windows. Windows 10 is spyware and bloatware loaded, which is fact, and also extremely ugly and non-user intuitive which I guess you could say is an opinion. I run it too, but only for games. It’s useless for everything else. Just my .02¢ on that.
 
This has actually been done several times. If you go this route I hope you find a non working iMac. Fyi, a “[?] blinking folder or disk” is not none working. (Just because I see that a lot on craigslist or eBay as not working)

I found these on google:

Obviously this would be a PC in a case so you could run whatever OS you wanted. Including Windows. Windows 10 is spyware and bloatware loaded, which is fact, and also extremely ugly and non-user intuitive which I guess you could say is an opinion. I run it too, but only for games. It’s useless for everything else. Just my .02¢ on that.
I get that, but I hope you realize that it's not as close to spyware as you think, especially with so many scripts out there to lock down the "spyware" as you call it, although the settings app can disable or cripple a bunch of it by itself if you ask it to... In it's original release I'll agree that it WAS nothing but spyware, but in my opinion they have done a good job listening to people, and give users a lot more freedom to disable stuff, on first boot even, in recent years...

Also, the iMac really doesn't boot, and the cd/dvd drive doesn't work, so since I only get the spinning wheel, and it absolutely refuses to boot from ANY usb operating system flash drives I have created, I decided that I would find a more modern usage for it... Sorry if I'm commiting a vintage iMac sin, by wanting to repurpose the case, but there you go...
 
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I get that, but I hope you realize that it's not as close to spyware as you think, especially with so many scripts out there to lock down the "spyware" as you call it, although the settings app can disable or cripple a bunch of it by itself if you ask it to... In it's original release I'll agree that it WAS nothing but spyware, but in my opinion they have done a good job listening to people, and give users a lot more freedom to disable stuff, on first boot even, in recent years...

Also, the iMac really doesn't boot, and the cd/dvd drive doesn't work, so since I only get the spinning wheel, and it absolutely refuses to boot from ANY usb operating system flash drives I have created, I decided that I would find a more modern usage for it... Sorry if I'm commiting a vintage iMac sin, by wanting to repurpose the case, but there you go...
That sounds like a bad drive, or just bad installation.
Also PowerPC macs don’t boot off USB the way you think. It requires manually pointing it in open firmware and it doesn’t always work properly. If you just hold option it won’t show anything. FireWire is what is officially supported for booting on iMac G3s Sounds like the iMac works to me. Not booting and dead are two different things.
The drive is extremely easy to get to, so you could either put a new one in, or take out the hard drive and use another mac to install the OS.

See the article here about Windows 10 (it’s closer to the bottom of the page) It is also still pretty bad when using scripts and disabling most of it.
 
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That sounds like a bad drive, or just bad installation.
Also PowerPC macs don’t boot off USB the way you think. It requires manually pointing it in open firmware and it doesn’t always work properly. If you just hold option it won’t show anything. FireWire is what is officially supported for booting on iMac G3s Sounds like the iMac works to me. Not booting and dead are two different things.
The drive is extremely easy to get to, so you could either put a new one in, or take out the hard drive and use another mac to install the OS.

See the article here about Windows 10 (it’s closer to the bottom of the page) It is also still pretty bad when using scripts and disabling most of it.
Ok, I won't argue about whether Windows is crappy, because I'm used to it, and have my ways of ensuring the privacy my tinfoil hat loving self deserves, while being okay with a certain amount of intrusiveness, however, I would like to respond on the topic of booting from flash drives, and I will say this... I know just hitting the certain key isn't enough, and I know it's actually 2 or 3 keys according to a few tutorials I followed, to the letter, including burning a mac OSx install disk to to a flash drive, so believe me, I have tried everything, short of spending buttloads of money on accessories for an old system, when I could just upgrade it to be a somewhat unique design, by making the airflow work in such a way that I can truly put a Windows system in there, and have it work without getting too hot, besides...

Note that I honestly don't have anything against old apple devices like this, it's just the fact that to me, this Mac as it is, isn't very appealing to me because the hardware is old... (Note that I only took it because otherwise it would go to the landfill, and I wanted to save the case and speakers at the very least) Now if it had dos and not mac that's different, because I like playing around with dos, but alas, it's an old slow Mac... Now why I won't buy a new mac is another thing entirely, because I don't like their idea of right to repair, or lack thereof, and price gouging, but I won't get into that or my other issues where I disagree with their practices
 
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Ok, I won't argue about whether Windows is crappy, because I'm used to it, and have my ways of ensuring the privacy my tinfoil hat loving self deserves, while being okay with a certain amount of intrusiveness,
Oh yes, I understand that completely. I do still boot into for games, but that’s it.
I would like to respond on the topic of booting from flash drives, and I will say this... I know just hitting the certain key isn't enough, and I know it's actually 2 or 3 keys according to a few tutorials I followed, to the letter, including burning a mac OSx install disk to to a flash drive, so believe me, I have tried everything
Including this?
it's just the fact that to me, this Mac as it is, isn't very appealing to me because the hardware is old... (Note that I only took it because otherwise it would go to the landfill, and I wanted to save the case and speakers at the very least) Now if it had dos and not mac that's different, because I like playing around with dos, but alas, it's an old slow Mac... Now why I won't buy a new mac is another thing entirely, because I don't like their idea of right to repair, or lack thereof, and price gouging, but I won't get into that or my other issues where I disagree with their practices
I am not particularly into new Macs either, I agree with you on most those topics. Though I am slightly interested in the in-house ARM models.

As far as the rest... I mean to each their own. My opinion isn’t anymore right or wrong than yours. I grew up using DOS, and Windows 98. I didn’t like it then, and I don’t now. I used some Macs in elementary school that predate your iMac (at the time I didn’t know what they were🤦)

My first ever Mac that was mine was a grape tray loading iMac G3 running 8.6. This was probably around 2006. I was older and knew a bit more, and my main machine was an AMD Athlon XP that had just died (the iMac was cheap and I just needed something)
Even though it was old and slow even for 2006 standards I fell in love with it and the OS, at least over Windows 98 which is what would’ve been the competitor. I even found it more intuitive than Windows XP despite the obvious lack of true multitasking.

Basically what I’m saying is, if you enjoy DOS of all things, you might enjoy fiddling around with classic Mac OS. There’s quite a lot of old games if you’re into that.

This is your iMac and do you’re free to do what you want with it obviously. Just from my experience from what you’ve described, it doesn’t sound like a dead Mac. It sounds like you’re inexperienced in how to get a Mac like this to boot USB (also what version of Mac OS did you attempt to put on it? It will absolutely not work with anything above 10.4) If all you have is a PC, that can be pretty challenging to even get the proper USB formatted for the Mac. A CD is ideal (it probably doesn’t have a DVD drive either), I’m assuming you tried that first as you said it’s a dead drive. None of these iMacs usually read CD-RWs. Only the older CD-Rs.

If you’re dead set on no longer investigating the Mac, I did link to some case mods for what you describe in my first post. I have looked into it myself and I know I’ve seen more than those ones. I just found those on a quick google.
If you do decide to investigate the iMac more and get it to work; I have seen plenty of empty iMacs being sold as “cat beds” that would be more than perfect for putting a PC into.
I also failed to ask you which particular iMac it is... there’s a difference between the tray loaders and slot loaders. Tray loaders being a bit more valuable. If you do gut it, perhaps put the parts up on eBay or something.
 
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Yes. What you are proposing is possible (G3 iMac rebuild with LCD flat screen). BUT it's not just the screen that would need changing, you'd have to gut the G3 and add compatible hardware - certainly not just a compatible power adapter! One could even add a Mac Mini inside, but even that mod to connect up to an LCD screen requires some serious engineering. Don't let anyone tell you otherwise. There are one or two clever guys who have accomplished this, but it's a serious mod - it ain't no weekend project! If it was, I would have done it with one of my iMac G3's......
Like what compatible hardware you speak of?
 
I find that because the original glass is curved and the LCD is flat, it'll never going to look perfect if that is the goal. Putting a shiny LCD into an eMac could look great though. Or if it's possible to get a piece of acrylic with one side flat and one side having the curved shape of the original glass surface, it could be glued with OCA on an OLED display, now that would be awesome!
 
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