Introduction

The Macintosh IIsi has a case fan mouted on inside back of the computer case.

The fan recieves power from two contacts on the logic board and has no connector.
  • The fan recieves power from two contacts on the logic board and has no connector.

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In all of the years that I have worked on this machine, I have found no good way to remove the fan. The best way to start, is to push in here on the side of the fan. Being careful not to exert too much force, try to push in, and wiggle the fan outward as such. (2nd Photo)
  • In all of the years that I have worked on this machine, I have found no good way to remove the fan.

  • The best way to start, is to push in here on the side of the fan.

  • Being careful not to exert too much force, try to push in, and wiggle the fan outward as such. (2nd Photo)

  • You can now lift the fan all the way out, and remove it.

  • The Fan Power Contacts on the Logic Board:

There is no need to pull out the fan. Just take a knife and you can squeeze the tab in step 7

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Conclusion

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

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Chris Green

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