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| G3/350 (Slot Loading - Blueberry) Logic Board upgrade |
Posted by: CursedSilicon on 2024-12-05 21:02:06
Hi all,
I was donated an iMac G3, according to EveryMac it's a "G3/350 (Slot Loading - Blueberry)" specifically.
The hard drive is shot so I'll need to crack it open to work on it. While I'm in there I was curious about the viability of completely replacing its main logic board.
I can see that later iMacs went all the way up to 700Mhz G3's, with faster GPU's to boot.
Has anyone done this kind of retrofit of a newer board into an older unit before? If so are there any "gotchas" to be aware of? |
Posted by: chelseayr on 2024-12-06 03:28:24
other than for that the i/o panel had a few different variations (particularly with or without firewire port, especially that specific one cpu+firewire upgrade from sonnettech) and that you might have to recheck if the exact same flybacks/etc was extant between tray-days first and snowy last imac models (as otherwise trying to plug one power circuit into another logic board would..umm..well..you know)
thats all I can really think of saying now as I only have a bit of basic familiarity with imacs in the first place (I still could like a specific ilamp but maybe thats a bit too much of a wish for the time being tho heh) |
Posted by: CursedSilicon on 2024-12-06 14:47:07
I might de-solder the firewire port if it's easier to make it fit the existing I/O plate on the side (anything I could use Firewire for I'd probably sooner use my G4 MDD)
This one is a slot loader rather than the older tray models. I'm not sure if the CRT changed much in that intervening time or not? |
Posted by: Byrd on 2024-12-06 15:09:17
I recall the 500-600-700 boards were interchangeable but they won’t fit an earlier 350-400 model |
Posted by: CursedSilicon on 2024-12-06 15:52:19
Is it due to the side panel I/O or is the layout/mounting of the board itself physically different? |
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