:QUOTE [quotetype:personal]
These machines were built to last decades. With the right care, they will last several more.


:INFO
Restoring a Vintage Macintosh Computer
Classic Macs from the 128K through the SE/30 era suffer from predictable aging: leaking electrolytic capacitors on the logic board, a dead PRAM battery, and yellowed plastics. Addressing these three issues restores most machines to full functionality.


:COUNTER.half
30 Years
|
:COUNTER.half
25 kV

:PATH
Assess the Machine
Power on the machine and note symptoms. Checkerboard or wavy display suggests bad caps. No startup chime often points to the PRAM battery. Document everything before disassembling.

:PATH
Recap the Logic Board
Remove the logic board and identify the electrolytic capacitors. Replace with same-value tantalum or new electrolytic caps. Clean corroded areas with isopropyl alcohol and a toothbrush. This single repair fixes most compact Mac faults.

:PATH
Clean the Case
Retrobrighting yellowed ABS plastic requires hydrogen peroxide cream, UV light, and patience. Apply the cream, wrap in cling film, and expose to bright sunlight or a UV lamp for 4 to 8 hours. Repeat as needed. Clean the screen inside with distilled water.

:CHECKLIST
Restoration Checklist
[ ] Discharge CRT anode before any internal work
[ ] Remove and inspect logic board under magnification
[ ] Replace all electrolytic capacitors on logic board
[ ] Replace PRAM battery with correct 3.6V lithium type
[ ] Clean corrosion with 99% isopropyl alcohol
[ ] Test all ports before reassembly
[ ] Retrobright case plastics if yellowed

:NOTE
The CRT in a compact Mac stores a lethal charge even when unplugged. Discharge the anode with an insulated screwdriver and discharge lead before touching anything inside the analog board or CRT neck.