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Help me Replace capacitors Harman Kardon CA240
Help me Replace capacitors Harman Kardon CA240
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Old 19th September 2019, 10:10 PM   #1
luberfly is offline luberfly
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Join Date: May 2019
Default Help me Replace capacitors Harman Kardon CA240

Dear friends, I write from Italy (Venice) and I'm new in this forum.
I need help!
I have a Car Power Amplifier Harman Kardon CA240 and I need to replace all the capacitors, expecially power supply capacitors 3000uF and 2200uf.


Someone can help me to suggest which model to use?
Looking on google seems that Panasonic Serie FC or M are good (FC seems better than M) and also Nichicon series UKW and UFW.


Who can help me?
Best Regards
Luca
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Old 19th September 2019, 10:40 PM   #2
rayma is online now rayma  United States
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Join Date: Apr 2011
Assuming that they fit and are same or more capacitance, then use the highest ripple current rating,
the highest temperature rating, and the highest voltage rating (at least original).

Last edited by rayma; 19th September 2019 at 10:50 PM.
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Old 19th September 2019, 11:03 PM   #3
luberfly is offline luberfly
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Join Date: May 2019
Ok,
so if original capacitor is 3300uF / 35V , 85 ...
between Current Riple 3.68A and 1.7A I choose 3.68A
and between lost current 1,3mA and 0,003A I choose 0,003A
Confirm?
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Old 19th September 2019, 11:07 PM   #4
rayma is online now rayma  United States
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Join Date: Apr 2011
Quote:
Originally Posted by luberfly View Post
Ok,
so if original capacitor is 3300uF / 35V , 85 ...
between Current Riple 3.68A and 1.7A I choose 3.68A
and between lost current 1,3mA and 0,003A I choose 0,003A
Confirm?
Yes for the ripple current, but don't worry about the leakage current, which is not important here.

Higher voltage and/or higher temperature is much more important than leakage in this case.
However, 1.3mA is better (lower leakage) than .003A.
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Old 19th September 2019, 11:18 PM   #5
luberfly is offline luberfly
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Join Date: May 2019
Sorry, all mA so 0.003mA (3 micro) is better 1.3mA

thanks a lot.
Luca
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Old 19th September 2019, 11:19 PM   #6
rayma is online now rayma  United States
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Join Date: Apr 2011
Quote:
Originally Posted by luberfly View Post
Sorry, all mA so 0.003mA (3 micro) is better 1.3mA

thanks a lot.
Luca
Right. I also would look for a 105C part if possible, but regardless ONLY genuine parts from
a reliable commercial source.

Last edited by rayma; 19th September 2019 at 11:22 PM.
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