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
After 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.