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IIci power supply recap and component identification

chue

Member
I am recapping two different IIci power supplies, and am having trouble identifying some components.

The first looks like a film capacitor. It is the rectangular shaped black component in the first photo with marking 2.0 uF 5%.
In the second photo, there are many yellow rectangular components. As an example, the marking on the highest yellow component in the photo reads 470nK63.

Anyone know what type of components these are? Digikey or Mouser links would be very helpful. Maybe a more important question is whether these normally get replaced as part of recapping?
 

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  • iici ps 1.JPG
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  • iici ps 2.JPG
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Byrd

Well-known member
The first photo is an X2 metallized polypropylene capacitor - also known as a mains suppression capacitor. The paper ones dry up and eventually burn up with a horrible smell, if this plastic one has cracks I'd replace it but is not an essential replacement.

The second photo and yellow parts are also film polyester capacitors and usually not replaced unless you have concerns. That one electrolytic capacitor I'd replace if you have gone this far.

Usually the caps you want to replace on Apple PSUs are those involved in the DC filtering stage, and not the bigger 300 - 400V ones which can be expensive and hard to source without substitute.
 

chue

Member
Thank you @Byrd for the great information!

There doesn't appear to be any visual defects on the capacitors that I asked about, so I will take your advice and leave them alone.

I do plan on replacing as many of the electrolytics and RIFAs as possible. Hopefully that brings these power supplies back to life.
 

chue

Member
From what I can tell these power supplies vary quite a bit in terms of components, even between power supplies that have the same model number. However, I think a capacitor list may still be useful to others.

The following is for ASTEC AA15830

iici ps 1 caps.jpg

Cap #​
Description​
lead spacing​
length​
width​
diameter​
height​
qty​
C1​
0.22uf 250v film X2​
20​
23​
11​
16​
1​
C2​
0.1uf 250v film X2​
20​
1​
CA​
0.047uf 250v film X2​
15​
17​
5​
8​
1​
C4, C5​
4700pf 250v film Y​
10​
13​
5​
10​
2​
C8, C9​
470uf 200v​
10​
24​
32​
2​
C16​
2uf 250v film​
28​
33​
15​
28​
1​
C17​
2200uf 25v​
7​
15​
34​
1​
C20​
47uf 100v​
10​
16​
1​
C21, C22​
1000uf 16v​
10​
25.5​
2​
C23​
47uf 16v​
3​
6.5​
11.5​
1​
C25, C26​
2200uf 10v​
13​
25.5​
2​
C30​
2200uf 16v​
12.5​
30​
1​
C31​
470uf 16v​
8.5​
18.5​
1​
C35​
10uf 25v​
1​
C36​
10uf 50v​
1​
C315​
2.2uf 50v​
1​
 

chue

Member
The following is for ASTEC AA15831

iici ps 2 caps.jpg

Cap #​
Description​
lead spacing​
length​
width​
diameter​
height​
qty​
C2​
0.22uf 250v film X2​
10​
25​
9​
17​
C4, C5​
4700pf 250v film Y​
10​
13​
5​
10​
2​
C6, C35​
3300pf 250v film Y​
10​
13​
4.5​
2​
C7, C8​
470uf 200v​
10​
22​
40​
2​
C10​
47uf 400v​
10​
21​
1​
C11​
47uf 25v​
6​
1​
C20​
2200uf 10v​
6​
13​
31​
1​
C22, C23​
1500uf 10v​
6​
31​
31​
2​
C25​
180 uf 16v​
7​
1​
C27​
470uf 16v​
5​
8​
1​
C28​
1000uf 16v​
6​
31​
31​
1​
C30, 217​
4.7uf 50v​
2​
C31​
100uf 35v​
5​
8​
12​
1​
C214​
2.2uf 50v​
5​
1​
 
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