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Mac II 699-0389 PSU (Astec AA13780) Cap Question

McEintosh

New member
Hi all! I have a Macintosh II which I obtained quite a couple of years ago. When I tried to power it up the other day using the jump start trick, something inside the power supply exploded developing an extreme smell.

I now decided to recap everything, starting with the PSU. The blown component obviously is a RIFA metalized paper cap next to that green and red wired coil near the two large 820µF 200V caps. I am unable to identify its values, as the debris which should have the values printed on it just seems to be missing. The only information I can recover is PME271N and 40/085/56.

Is there a schematic for the Apple 699-0389 PSU or could someone please tell me the values of that blown RIFA cap?

AA13780.jpg

RIFA.jpg

 

LaPorta

Well-known member
If no one else replies, I can see if my Mac II had this power supply later this evening.

 

Alex

Well-known member
I believe this is it, Rifa PME 271 M Suppression Metallized Paper Capacitor

I just don't know what the values are for your part. Hope this helps, the image is just a sample.

RIFA.jpg

 
Last edited by a moderator:

LaPorta

Well-known member
Doh, I'm sorry...been so busy I neglected to do this for you, my apologies. I can look a bit later today.

 

McEintosh

New member
Managed to shoot another Mac II with the same PSU now ...

For future reference, here's the solution: it's a  250V 22nF X2!

Thanks everyone!

22nfx2.jpg

 
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