Hello all,
I had an old 230W KME power supply go flaky in a 486 awhile back, and since then retired it to the junkpile of PC parts outside. Well recently, I was digging around in that pile when I came across it. Suddenly I came up with the crazy idea of recapping it.
So I dug it out of the pile, brought it inside, and took a look inside. In there I found that it had two 180uf 200v Panasonic primary (input) caps, which I thought were weak for a supply that's supposed to do 230W. The secondary caps were all D.S. type LL, and none had a capacitance higher than 1000uf. Also, the fan was missing (from a previous experiment.) So I went to work.
First thing I did, was replace those two 180uf primaries with some beefy 470uf Chemi-Cons. The general majority of the secondary side went to my beloved Nichicon PLs, as well as a Chemi-Con LXF.
Here are the original caps and parts, and what I replaced them with:
2x 180uf 200v Panasonic --> 2x Nippon Chemi-Con 470uf 200v
3x 1000uf 16v D.S. LL --> 3x Nichicon PL 2200uf 16v (I love the Nichi PL/PM
)
1x 1000uf 10v D.S. LL --> 1x Nippon Chemi-Con LXF 2200uf 10v
1x 470uf 10v D.S. LL --> 1x Samyoung LXV 1500uf 10v (temporary)
1x 10uf 50v D.S. LL --> 1x JPce-tur 10uf 50v (temporary)
Missing 80mm fan --> 1x cheap 80mm Mitachi Spacefan (hey, it has to go someplace
)
The new caps were much bigger and heavier than the cheap D.S. things I removed, thus giving this lightweight supply a little weight.
The result: It works! 
I connected an old DTK 386SX motherboard to it, as well as three old full-height 3.5" IDE hard drives (the biggest of which was a 340MB Maxtor LXT-340A which ate 10W idle). I ran a DMM on the voltages, and found that +12 had 12.13v and +5 had 5.21v. Tomorrow I'll finish up the recap (those Samyoung and JPce-tur will definitely be replaced).
I had an old 230W KME power supply go flaky in a 486 awhile back, and since then retired it to the junkpile of PC parts outside. Well recently, I was digging around in that pile when I came across it. Suddenly I came up with the crazy idea of recapping it.
So I dug it out of the pile, brought it inside, and took a look inside. In there I found that it had two 180uf 200v Panasonic primary (input) caps, which I thought were weak for a supply that's supposed to do 230W. The secondary caps were all D.S. type LL, and none had a capacitance higher than 1000uf. Also, the fan was missing (from a previous experiment.) So I went to work.
First thing I did, was replace those two 180uf primaries with some beefy 470uf Chemi-Cons. The general majority of the secondary side went to my beloved Nichicon PLs, as well as a Chemi-Con LXF.
Here are the original caps and parts, and what I replaced them with:
2x 180uf 200v Panasonic --> 2x Nippon Chemi-Con 470uf 200v
3x 1000uf 16v D.S. LL --> 3x Nichicon PL 2200uf 16v (I love the Nichi PL/PM
)1x 1000uf 10v D.S. LL --> 1x Nippon Chemi-Con LXF 2200uf 10v
1x 470uf 10v D.S. LL --> 1x Samyoung LXV 1500uf 10v (temporary)
1x 10uf 50v D.S. LL --> 1x JPce-tur 10uf 50v (temporary)
Missing 80mm fan --> 1x cheap 80mm Mitachi Spacefan (hey, it has to go someplace
)The new caps were much bigger and heavier than the cheap D.S. things I removed, thus giving this lightweight supply a little weight.
The result: It works!
I connected an old DTK 386SX motherboard to it, as well as three old full-height 3.5" IDE hard drives (the biggest of which was a 340MB Maxtor LXT-340A which ate 10W idle). I ran a DMM on the voltages, and found that +12 had 12.13v and +5 had 5.21v. Tomorrow I'll finish up the recap (those Samyoung and JPce-tur will definitely be replaced).
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