Hi,
I isolated a power supply failure in my Cambridge Audio Azur 550A to a shorted filter cap (C42, page 37 - see service manual attached) on the +45V supply of the right-hand channel PCB. The faulty cap is a Cambridge Audio branded "Audio Grade" 2200uF, 63V, 105°C 18mmx35.5mm (see attached photo), for which CA have refused datasheet information and the supply of a replacement(s) as they advise they do not supply these items to "end users".
Since audio grade caps rarely appear available at more than 50V (105°C) it has me wondering whether or not a couple of decent quality non-audio grade Nichicon or Rubycon caps will suffice in the C41 and C42 positions (my intention is to replace both +45V side filter caps to reduce any untoward imbalances between original and non-original caps).
Given that audio grade 2200uF, 63V, 105°C capacitors appear to be a rare item, I am looking for suggestions for potential replacements (brand and series) that I can use in place of the original CA caps. I would think that low ESR, high ripple would the guiding parameters, but the latter can be quite a range. In other words, what is considered too low, high enough or even excessively high ripple current for a cap for this particular purpose?
So far I have been looking at the caps below, with the last two (Rubycon and Vishay) having quite substantially higher ripple current figures than the other three. Are these suitable/compatible? I am also wondering if leakage is a particularly important parameter to pay attention to for this usage:
Nichicon UVZ1J222MHD
Nichicon UVY1J222MHD
Panasonic ECA1JHG222
Vishay MAL214258222E3
Rubycon 63ZLJ2200M18X35.5
Thanks in advance for any advice and suggestions.
Tony
I isolated a power supply failure in my Cambridge Audio Azur 550A to a shorted filter cap (C42, page 37 - see service manual attached) on the +45V supply of the right-hand channel PCB. The faulty cap is a Cambridge Audio branded "Audio Grade" 2200uF, 63V, 105°C 18mmx35.5mm (see attached photo), for which CA have refused datasheet information and the supply of a replacement(s) as they advise they do not supply these items to "end users".
Since audio grade caps rarely appear available at more than 50V (105°C) it has me wondering whether or not a couple of decent quality non-audio grade Nichicon or Rubycon caps will suffice in the C41 and C42 positions (my intention is to replace both +45V side filter caps to reduce any untoward imbalances between original and non-original caps).
Given that audio grade 2200uF, 63V, 105°C capacitors appear to be a rare item, I am looking for suggestions for potential replacements (brand and series) that I can use in place of the original CA caps. I would think that low ESR, high ripple would the guiding parameters, but the latter can be quite a range. In other words, what is considered too low, high enough or even excessively high ripple current for a cap for this particular purpose?
So far I have been looking at the caps below, with the last two (Rubycon and Vishay) having quite substantially higher ripple current figures than the other three. Are these suitable/compatible? I am also wondering if leakage is a particularly important parameter to pay attention to for this usage:
Nichicon UVZ1J222MHD
Nichicon UVY1J222MHD
Panasonic ECA1JHG222
Vishay MAL214258222E3
Rubycon 63ZLJ2200M18X35.5
Thanks in advance for any advice and suggestions.
Tony
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