I have just taken delivery of a Macintosh Plus and a Macintosh SE. Both were very kindly given to me,
by a university lecturer who has just retired. Both machines where stored away in a back room, not being used
for years. He found them when he was cleaning out his belongings and did not want them to be skipped.
I have chosen the Plus, to be the machine that I will work on to continue my blog about restoring and cleaning.
In part one
. I described some of the tools I use and the items I use for cleaning. This time I will inspect the machine
and clean up the case.
The plastic case of the Plus is in good condition, it has no marks, stickers, scuffs or engravings which is unusual
for a machine that has come from the education field as normally they would have marked it with the postcode or
the university name. The case also looks like it has not been subjected to much UV light, as it only has slight
yellowing. Although the case is a little dirty the only real dirt is on and around the power switch.
Opening and cleaning the case
I opened up the case using the Torx 15 screwdriver with the long shaft. Remember on the original Macintosh,
the 512k and the Plus they all have a fifth screw under the PRAM battery cover. Sometime the back case can be
little hard to remove. I normally place the Macintosh face side down, and pull the back case off. The weight of the
components inside help with this. if the case appears to be stuck, try gently pushing the I/O ports or the power
inlet, whilst holding the back case.
With the back case removed, I put the exposed machine out of the way in a safe place, where it will not be
damaged. The CRT contains a vacuum which may implode if damaged, it also contains dangerous substances
like mercury. So it is important that nothing falls onto it when it is exposed.
Now that the back case is separate, it is safer and easier to manoeuvre it around. Using a multi purpose house
hold cleaner and a toothbrush, I gently scrub over the outer case bit by bit. I wipe up the excess liquid with a lint
free cloth, buffing it up as I go along. The toothbrush is a ideal tool for this, as it gets into the vents and inside the
handle without a problem. A non scratch scourer can also be used on large areas or more stubborn dirt.
The cleaned case
Normally I just wipe inside the case with a lint free cloth and brush the dust from the hard to reach places with a
paint brush, but I had an Idea and decided to experiment. The inside of the case is coated with a metal oxide to
help stop interference, over time the metal gets tarnished and becomes dull. So I decided to polish it with some
metal polish. The polish I used is called Peek
. I used a lint free wipe to apply the polish and another to buff it up.
The results were excellent as you can see from the pictures below.
The front part of the case will have the same treatment, but I will have to remove the other components attached to
it first. That we will start to cover in the next part. Let me know if you have any comments or questions.