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Old 18th May 2006, 01:12 AM   #1
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Default cyrus 2

Hi

I have a mission cyrus 2 amp which blew a capacitor last
night.
Do you know what type of capacitor i should get to
replace it as i would love to keep my cyrus.
The numbering on the capacitor seems to be of no use
to the staff at the local maplins.
+ 470 / 50 - T8 EKM
If anyone knows what type of capacitor i should replace with would be great

thanks
tim
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Old 18th May 2006, 01:14 AM   #2
anatech is offline anatech  Canada
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Hi Tim,
I haven't looked, but 470 / 50 would appear to be 470uF 50V.

But first, find out why the capacitor burst. Can you post a picture?

-Chris
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Old 18th May 2006, 01:30 AM   #3
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Hopefully only age is the problem here. They are at least 14 years old now.
Manufactured '84 - '92.
Fingers crossed.
The Cyrus 1 is pretty darn similar. Could you get a rough idea which cap it is by looking here.....
Cyrus 1 Power Amp Schematic

At least it's not one of the big slit foils!!
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Old 18th May 2006, 01:37 AM   #4
anatech is offline anatech  Canada
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That's why I'd like to see a picture. I repair Cyrus under warranty.

-Chris
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Old 18th May 2006, 07:39 AM   #5
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Default pics

Thanks so much
here are some photos
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File Type: jpg cyrus2.jpg (7.3 KB, 4359 views)
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Old 18th May 2006, 07:39 AM   #6
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Default pics

more pictures
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Old 18th May 2006, 07:49 AM   #7
AndrewT is offline AndrewT  Scotland
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Hi,
when you said "blew" you meant it.

Definitely worth repairing.
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Old 18th May 2006, 08:03 AM   #8
Luke is offline Luke  New Zealand
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I know this is thread jacking, so feel free to ignore me, but how good are these Cyrus amps, seems the british HiFi press love them.
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Old 18th May 2006, 08:39 AM   #9
lohk is offline lohk  Europe
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This is one of the preamp (phono only) psu caps. They usually blew much earlier, because Mission used a not reliable series perhaps. I changed many of them already in the late eighties and early nineties. They also usually break (not necessary explode, but get leaky, loose capacity, and start to "modulate" the voltage...) just by age, not by any other cause. So you may be lucky here, although it is difficult to say without having the item on my desk.

So in any case: Remove the remains (not easy...) and solder in a new cap with the already mentioned values (better would be 470F / 63V but htese do not fir perhaps). Do not forget the polarity. Then power up the amp (with the power amps fuses removed!) and check the voltages before (at the caps or the diodes) and after the regulators.
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Old 18th May 2006, 08:39 AM   #10
AndrewT is offline AndrewT  Scotland
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Hi,
very good, even the older ones.
I have a Cyrus Two with PSX. Sounds superb for the second hand price I paid.
Although my line level only Cyrus8 is better, but does not have phono.

Oh, I wish someone would post a Cyrus Two schematic.
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