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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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“This does not compute”: Mac SE/30 repair

Posted by jpluimers on 2021/09/21

A while ago, This does not compute had a few nice videos on a Mac SE/30 and it’s repair, including the recap process of replacing the electrolytic capacitors (or condensators in some other languages), and cleaning the board (some wash it with hot water and soap, others with isopropyl-alcohol, often called rubbing alcohol).

Note the simasimac can have many causes: bad capacitors in main board are the most common, but it can also be bad memory.

White lithium grease can make the floppy work again (see also [WayBack] Lithium soap – Wikipedia and [WayBack] Grease (lubricant) – Wikipedia).

He also added some links to which I added some quotes and WayBack links:

Notes

Desolder can be tricky, especially for surface mount. This helps:

  • Add some fresh 60/40 solder to the joints with a solder gun (as modern solder is lead free, whereas past solder contained lead)
  • Carefully heat up the component and surrounding area with a heat-gun

Choosing capacitors:

Soldering: always add some fresh solder on the pads before soldering surface mount (SMD) capacitors.

–jeroen

 

 

 

 

 

 

 

https://www.youtube.com/user/cwwirth/videos

 

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