Apple 820-1486-A Power Board Down Converter eMac G4 A1002 Mac PowerPC 2003

Apple 820-1486-A Power Board Down Converter eMac G4 A1002 Mac PowerPC 2003

The Apple 820-1486-A is a proprietary power board down converter designed for the Apple A1002 eMac G4. It serves as a secondary power distribution board within the eMac's power system, converting and regulating voltages from the main power supply to levels needed by the logic board and other internal components. The board carries Apple part number 820-1486-A, as printed on the PCB silkscreen, and is dated 2003.

Specifications & What's Included

• Apple Part Number: 820-1486-A
• Compatible Machine: Apple A1002 eMac G4
• Board type: Power down converter / secondary power distribution board
• Connectors: Molex power connectors (two), with attached red/yellow/black wiring harness
• Includes integral daughter board (marked B601) with multi-pin header connector
• Capacitor array mounted on metal-shielded section of board
• PCB marked: 820-1486-A, Apple Computer, Inc., © 2003
• Included: Board with attached wiring harness and Molex connectors; no additional accessories

Applications

The Apple eMac (A1002) was an all-in-one PowerPC G4-based Macintosh produced by Apple from 2002 through 2005, originally aimed at the education market. It used a highly integrated power architecture in which the main power supply fed secondary converter boards like this one to distribute regulated voltages throughout the unit. The 820-1486-A down converter board is a direct replacement part for eMac G4 repairs — most commonly needed when the original fails due to capacitor degradation or power regulation issues, which are the most frequent failure modes in early 2000s eMac units. This board is now a sought-after vintage repair part, as the eMac remains a collectible and functional Mac for enthusiasts and educators maintaining legacy Apple systems.