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replace electrolytic capacitors with solid state, Do i need to replace capacitors on a like for like basis?
john11
post Dec 21 2012, 06:22
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Hi and thanks for reading this post.

Do you think it would be a good idea to replace the usual aluminium electrolytic capacitors on a Zero dac board for the better specs of a solid state (polymer) type capacitor.

I have a Zero dac which reproduces digital sound signals from my pc's usb port and it has 4 aluminium electrolytic's around the dac chip (47uf 35v) which are swollen and leaking and 4x 10uf 63v output coupling caps in the analog section, so 8 caps to replace in all, do you think a like for like replacement of the stock aluminium electrolytics for solid state polymer type caps would be okay in this situation.

I have done a google search and people have performed this on pc motherboards but there is not much on other types of equipment.

Many thanks in advance. John.
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john11
post Dec 25 2012, 08:37
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Hi. Thanks for the replies.

Can anyone support Glenn with his preference of the panasonic fp and fk series.

47uf panasonic fk esr=0.2 ohms @11 pence each (smt)
47uf panasonic fm esr=0.3 ohms @ 50pence each (aluminium electrolytic)
47uf Nichicon RNU1H47 esr= 0.02 ohms @ $2.50 each (smt)

It appears the nichicon has ten times less esr than the panasonic fk, but looking at it another way the esr difference is 0.18 ohms is this something significant something the human ear can detect.

On the farnell website when the caps are listed in order of esr, the lowest esr ones are the most expensive is there something to that.

Many thanks. John.
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Glenn Gundlach
post Dec 25 2012, 09:20
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Sorry about the extra post. How do you delete?

This post has been edited by Glenn Gundlach: Dec 25 2012, 09:22
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Posts in this topic
- john11   replace electrolytic capacitors with solid state   Dec 21 2012, 06:22
- - Speedskater   I don't think that many people are familiar wi...   Dec 21 2012, 23:09
- - saratoga   The ESR won't be quite the same since the chem...   Dec 22 2012, 02:02
- - Dynamic   I'd have thought they'd be power supply sm...   Dec 22 2012, 04:26
|- - Glenn Gundlach   QUOTE (Dynamic @ Dec 21 2012, 19:26) I...   Dec 22 2012, 10:18
|- - Dynamic   QUOTE (Glenn Gundlach @ Dec 22 2012, 09:1...   Dec 22 2012, 17:03
- - Arnold B. Krueger   QUOTE Do you think it would be a good idea to repl...   Dec 22 2012, 15:49
- - john11   Hi. Thanks for the replies. You are absolutely ri...   Dec 24 2012, 09:16
|- - Glenn Gundlach   QUOTE (john11 @ Dec 24 2012, 00:16) Hi. T...   Dec 24 2012, 10:53
|- - Arnold B. Krueger   QUOTE (john11 @ Dec 24 2012, 03:16) Hi. T...   Dec 24 2012, 13:49
|- - Glenn Gundlach   Arny, try a Metcal and I ASURE you you'll have...   Dec 25 2012, 08:20
|- - Arnold B. Krueger   QUOTE (Glenn Gundlach @ Dec 25 2012, 02:2...   Dec 25 2012, 13:59
|- - Glenn Gundlach   QUOTE (Arnold B. Krueger @ Dec 25 2012, 04...   Dec 25 2012, 22:46
- - john11   Hi. Thanks for the replies. Can anyone support Gl...   Dec 25 2012, 08:37
|- - Glenn Gundlach   QUOTE (john11 @ Dec 24 2012, 23:37) Hi. T...   Dec 25 2012, 09:18
|- - Glenn Gundlach   Sorry about the extra post. How do you delete?   Dec 25 2012, 09:20
- - john11   Hi. Thanks for the replies. I saw on the amp boar...   Dec 28 2012, 04:05
- - Glenn Gundlach   QUOTE (john11 @ Dec 27 2012, 19:05) Hi. T...   Dec 28 2012, 04:24
|- - Soap   QUOTE (Glenn Gundlach @ Dec 27 2012, 22:2...   Dec 28 2012, 16:19
|- - Glenn Gundlach   QUOTE (Soap @ Dec 28 2012, 07:19) QUOTE (...   Dec 28 2012, 20:11
- - Arnold B. Krueger   QUOTE (john11 @ Dec 27 2012, 22:05) Hi. T...   Dec 28 2012, 15:05


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