Repair of a Kenwood Home Stereo system

Passives Capacitors
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1

I wonder if you can help me out I am trying to find the following ceramic capacitor for fixing a home stereo system Kenwood RXD-27-L

7.0pf Torrence +/- 0.5%

33pf Torrence +/- 5%

I am not sure what voltage they are but I know that one cable feeds into this board the following voltages 10v, 0v, 10v, 22.2v, 3.1v, 3.0v

any help would be appreciated

many thanks

2

Welcome to the forum.

  • Are these through hole or surface mount?

  • Are you sure the tolerance on the 7pF cap is +/-0.5%?

AFAIK, only mica capacitors are available with a tolerance that tight.

A more likely tolerance for a ceramic capacitor is +/-0.5pF

On older gear, ceramic capacitors are generally all 50V or higher.

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3

Hello @michaelbix2015 and @PaulHutch,

Are you familiar with https://www.hifiengine.com/ ?

It’s an extraordinary resource for repair of stereo equipment. They even have the service manual for the Kenwood RXD-27-L.

Sincerely,

Aaron

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I submit for your consideration the following ceramic capacitors:

FG28C0G2A070DNT06 by TDK Corporation

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C315C300J1G5TA by KEMET

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hi thank you for getting back to me they hole mount and I got the stereo manual and screenshot of what it says about these capacitors.
CC45FUJ1H070D Creamic Capacitor 7.0PF +/- 0.5% D

CC45FUJ1H330J Creamic Capacitor 33PF +/- 5% J

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part numbers but northing comes up CC45FUJ1H070D and CC45FUJ1H330J

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i got the torrence on chart i found

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hi thank you for getting back to me will the ones you shown be ok for repair then i really appreciate your help so far

10

thank you i have the manual but dig not very clear

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Hello michaelbix2015. Here are options for the 7pf, in 50V. Here are options for the 33pf in 50V. You’ll want to take a look at the datasheets to get as close to your original caps as possible.

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Unfortunately that one is +/-0.5pF which = +/-7% of 7pF. So it would be better to buy one of the +/-5% units.

In surface mount there are a few parts rated for +/-0.05pF = +/-0.7% like this one:

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hi the 33uf link is taking me to 7pf ones and i appreciate all the help

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hi i appreciate your help but the 33uf is 30uf is this ok

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My mistake, if 33pF is needed this one would be better:
C315C330J1G5TA KEMET | Capacitors | DigiKey