Recaping a Macintosh Portable

Matt Patoray mspproductions at
Mon Dec 8 15:59:04 CST 2014


I am bypassing the dead battery using a variable bench power supply set at
6V, I have disconnected the dead hard drive. I am powering with a power
book 100 series power adapter.

I had disassembled the unit and when i got the logic board out you can
smell electrolyte and see corrosion around the pins of some of the surface
mount capacitors.

The radial electrolytics will be replaced as there are only 5, those will
be replaced with Panasonic FR series caps.

I suspect the Axial 470 UF caps will be fine as those are Nichicon 105
degree and are quite expensive to replace with something of similar
quality. But if i have to there are some Vishay ones that would fit the


On Mon, Dec 8, 2014 at 2:43 PM, drlegendre . <drlegendre at> wrote:

> On Mon, Dec 8, 2014 at 10:40 AM, Simon Claessen <simski at> wrote:
> > but do change the caps, and you can substitute the platter of a mac
> > classic 40mb drive and reuse the electronics of the drive in the
> portable.
> FYI, this didn't work for me, even though I did apparently have the
> 'correct' 40MB Connor HD. The electronics wouldn't transplant, or something
> to that effect.  I ended up having to make a cable for it, which was a
> little messy but did work just fine.

Matt Patoray
Owner, MSP Productions
mspproductions at
KD8AMG Amateur Radio Call Sign

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