There were two revisions of the Macintosh Portable power supply - one made by Sony and one from Delta. The Sony supply always has leaky caps (including one extra leaky ELNA cap), while the Delta doesn't appear to be as bad. I'd highly recommend recapping your supply regardless of which vendor it's from. The Sony supplies seem to be the earlier ones, with the Delta being newer.
All of these caps are Low-ESR - replace accordingly. Diode D202 can get destroyed by the cap goo - if it's bad, replace with a 1N5819. There is also a Hybrid module in this supply that goes bad due to Sony's epoxy absorbing moisture and damaging it. Techknight recently reverse engineered it, so you can have a new one manufactured if yours is bad. I'll link the gerber files and BOM once he's posted them. You can also attempt to fix the original by removing the epoxy with acetone.
| Value | Count | Type |
|---|---|---|
| 2200uf 16v | 1 | Radial Electrolytic |
| 330uf 16v | 1 | Radial Electrolytic |
| 100uf 25v | 1 | Radial Electrolytic |
| 2.2uf 50v | 1 | Low Profile Radial Electrolytic |
These caps are not Low-ESR.
| Value | Count | Type |
|---|---|---|
| 1000uf 16v | 2 | Radial Electrolytic |
| 10uf 50v | 1 | Radial Electrolytic |
| 4.7uf 50v | 1 | Radial Electrolytic |
Home < Repair Portal < Capacitor Reference Library < Macintosh Portable AC Adapter