YouTube channel author Zac Builds presents a project to modernize the classic iMac G3 of the late 1990s, turning the device into a modern computer with an Apple M4 chip. The work combines careful disassembly, the use of 3D printed components, and a comprehensive redesign of the internal structure, Tom's Hardware reports.
During disassembly, the engineer discovered that some of the original parts of the iMac G3 had significantly degraded: the speakers were unusable and the frame of the CRT display collapsed during disassembly. As a result, only the support frame and transparent case remained from the original hardware platform, which became the basis of the updated system.
To restore the rigidity of the structure, the blogger developed and produced additional parts on a 3D printer, which were fixed inside the case. After testing its power, he modified the original iMac power supply, repurposing it to power an unmodified Mac mini M4 housed inside.
To expand the storage system, the modder added a dock with an SSD slot. The new 3D printed speakers are connected to a separate digital amplifier because the Mac mini's native output doesn't provide enough power. He brought the volume slider to the area where access to RAM modules was previously located.
To ensure easy connection of external devices, the author created a new interface board with USB-C, USB-A, Thunderbolt and Ethernet connectors. The classic 3.5 mm audio jack had to be removed.
The final step is the integration of a 14-inch OLED display with 4K resolution and a transitional insert that compensates for the difference between the flat display and the curved facade of the G3 case. The result is a fully functional hybrid, combining the signature design of the late 90s with modern computing capabilities.
