Replacement cap for old stereo

[Chugs]

I need to replace a 1000uf cap in my old Kenwood stereo. Any suggestions as to where I can find a suitable replacement? Does not need to be a vintage cap, anything that will do the job is fine.

The cap is approx 25mm in diameter.

[peterg]

You should be able to find a replacement at an amp supply store such as:

http://www.thetubestore.com/Capacitors/Can-Capacitors

http://www.justradios.com/cart.html

[Gus]

Are you sure the cap is bad? The older caps like that ELNA can last a long time. 

[Chugs]

The amp is approaching 50 years old and has been used for several hours a day nearly every day. Recently it developed a hum which I suspect is the Filter caps in the power supply ageing.

Looks like these might do the trick.

http://www.rapidonline.com/Electronic-Components/1000-F-20-63V-105-C-Vishay-Snap-In-Aluminium-Electrolytic-Capacitor-49-2133

[R.G.]

1. Measure the diameter of the capacitor.
2. Find a replacement capacitor with the same diameter, equal or larger capacitance, equal or larger voltage rating. You will find that modern caps will be both larger capacitance and larger voltage for the same size.
3. Order, install, carefully observing the polarity.
4. Enjoy.

It would make a great deal of sense to replace all of the electrolytic capacitors as long as you're working on it. All of them are 50 years old.

[Chugs]

Sounds like a sound plan R.G.

I will definitely do no.4 after the first three steps. Quite fond of the amp which is an old Kenwood TK-250 that used to belong to my father.

I noticed the top end started sounding a bit dull about a year ago. I replaced all the electro's in the preamp and it sounded much better.

 

[amptramp]

Recapping is a standard procedure used by antique radio collectors and it has spread to the audio community as well.  Here is a good guide written by Phil Nelson with all the patience of an R.G. post on this board:

http://antiqueradio.org/recap.htm

Some people gut old electrolytics and put the replacements inside since the newer ones will be smaller to preserve the antique appearance, but it is not necessary in your case.