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Quick Mac 128k capacitor question...

Corey986

Active member
Work has me near a local electronic parts place today, so I wanted to stop in and get replacement electrolytic caps for my Mac 128k.  I have all the caps for the Analog board already, but figure before I put the motherboard back in I should replace the axial electrolytic caps on the motherboard also.   I forgot to write down the caps on the board before I left this morning.

I seem to recall there were two 33uf 16v caps.  Is there another value on the board I should grab?

Thanks,

Corey

 

BadGoldEagle

Well-known member
You don't really need to replace the caps on the 128k motherboard. They are fine (for now).

Good thing though to recap that analog board. 

To answer your original question, the specs on the axial logic board caps are as follows:

C22 = 4.7uF 35V
C5 & C20= 33uF 16V

 

Corey986

Active member
When I removed one of the 33uf it was apparently gooey underneath. Don't think it was adhesive. I think I had a leaky cap. So I guess they can go bad.

 
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