Just bragging about my G4 iMac G3.

Trekintosh

New Tinkerer
Dec 31, 2024
28
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Disclaimer; I didn’t actually do this, I bought the logic board on eBay after a lovely chat with the previous owner.

notes:
My 400mhz Indigo is of the summer 2001 variety I think. It has the single white power LED. The logic board came from an early Ruby DV, apparently, and would have expected a green/amber bi-color LED. As such, the power LED simply doesn’t work.

The swap was performed by @dosdude1 and works great! Worth noting that it wouldn’t work for a late 01 chassis with a 600 or 700mhz cpu, as those have the heat spreader in a different location. I don’t know the tenability of a cpu swap on those boards, outside my area of expertise.

The LEDs are SK6815 RGBW 12v strands controlled by an ESP32 running WLED. I removed the iMac’s modem and ran the WiFi antenna for it outside through the jack hole, all reversible.

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Trekintosh

New Tinkerer
Dec 31, 2024
28
13
3
Good lord, how is the heat on this thing?
The air wafting out the top isn't detectably warmer than before. I do have a 40mm fan strapped to the horizontal output transistor heatsink on the analog board, pulling air upwards so as not to fight the existing convection. It did run through the Norton system benchmarks without any hiccups or complaints, I haven't gotten around to finding a good temperature sensor widget (are there even temperature sensors in the 7410?), so I can't give it much more than "it works!"