Macintosh Classic II Back Cover Removal

Written By: oldturkey03
  • Comments: 2
Macintosh Classic II Back Cover Removal

Difficulty

Moderate

Steps

5

Time Required

10 - 20 minutes

Introduction

I have had this computer for years but just never got around to working on it until now. There was a general question about the possibility of connecting a SSD to this computer. For now, this one will have to get taken apart, cleaned, and possibly recapped. After that we a re going to see if the SCSCI hard drive can be replaced by an SSD.

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    • Here is one of the vintage computers in my possession. It is a Macintosh Classic II M4150. Apple considers this obsolete and " information about these products is no longer updated as of 9/1/98 "

    • On powering it up, It originally greeted me with a checkerboard pattern that quickly converted into this pattern. The checkerboard pattern is/was commonly caused by bad Ram memory. Considering the age of this computer, leaking capacitors are a strong possibility. Time to check.

    • This computer contains a CRT. That means there are some high voltages involved when working on this. Use proper CRT safety while working on it.

    • The cover is held in place by four (4) T-15 screws. Two (2) on the bottom

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    • and two (2) under the top (handle)

    • The bottom ones are easy to remove

    • The top ones are a bit of a challenge due to the depth of the holes.

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    • There was just not enough room to get a good grip on the driver.

    • Luckily this iFixit driver has a hole on the top part. I used a tool to gain some mechanical advantage. While applying downward pressure on the driver, turn the tool to the left to loosen the screw

    • Once loosened, the iFixit extension that came with my set, works perfectly to remove the screw,

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    • Here are the four (4) screws. The two bottom screws are M4X15mm The top screws are those typical found in plastic to sheet metal joints.

    • With the screws removed the cover will slide off.

    • BEst practice is to lay it down and pull the case straight up. It may take some force due to the tight fit and years of storage etc.

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    • Here is what the inside looks like.

    • Remember the High Voltage. Do not touch anything with bare hands etc. Right now it's look but don't touch

    • Power supply (Sweep Board)

    • Flyback Transformer

    • Video card

    • CRT

    • SCSI Hard drive

    • Hard drive on top with the Floppy drive on the bottom

Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

oldturkey03

Member since: 29/09/10

805802 Reputation

2 comments

Good job! Any pictures on replacing and resoldering the new compacitors?

Andy -

@andy77473 I should still have those, but it will have to wait till after the weekend. Really busy with some other important stuff :-)

oldturkey03 -