Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Nippon Chemi-Con Caps
Nippon Chemi-Con Caps
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 26th October 2003, 07:08 AM   #1
Rovnan is offline Rovnan  United States
diyAudio Member
Join Date: Oct 2003
Location: Lancaster, PA
Default Nippon Chemi-Con Caps

I was taking apart my Pioneer SX-1250 today for a routine cleaning, and noticed that 3 of the 4 main power supply caps have leaked some electrolytic fluid inside the case.

At some point they seem to have overpressured, as the "spattering" marks indicate the electrolytics exited at high velocity (evident spray corrosion pattern)

Anyhow, the amp still works fine, but I'd like to replace the damaged caps. The original Caps pioneer used were 4 separate 22,000MFD 80V large can types. The original brand is Nippon Chemi-Con, series CE W.

Nippon is still in business, but doesn't make the CE W line anymore. Does anyone know what the new compatible line would be, or where Nippon parts can be ordered?
Nippons website doesn't seem to be much of a help so far...

Pioneer still sells the caps -- but for a whopping $79 a piece.

Is is common for large electrolytics to leak like this, but continue to function? There doesn't seem to be any sign of present leakage...just corrosion and stains left.

Any help appreciated.
  Reply With Quote
Old 26th October 2003, 01:57 PM   #2
Lars Clausen is offline Lars Clausen  Denmark
diyAudio Member
Join Date: Oct 2003
Location: The Lab

Capacitors would normally keep working even after loss of electrolytic fluid caused by overheating / pressurizing. However your capacity may have deteriorated, less uF's, and the equivalent serial resistance may have gone up. All resulting in lower performance. The biggest problem you may be facing is that your capacitor's lifespan has now been shattered, and they may only have short time to live from this point.

You may want to try Future Electronics, or Farnell as these companies are main distributors of this fine brand. Just add a .com after the above company names to find their homepages.'
The right price for a capacitor of this size is something like 15-20$

All the best from Denmark ....
  Reply With Quote
Old 26th October 2003, 02:01 PM   #3
Jocko Homo is offline Jocko Homo  United States
Join Date: Feb 2002
Location: As far from the NOSsers as possible
Default Since you are in the USA......

I would start with Digi-Key. Then try Mouser and Newark.

They don't have to be exact replacements, but there may be some audible differences with any type of replacement cap.

  Reply With Quote
Old 26th October 2003, 03:30 PM   #4
Rovnan is offline Rovnan  United States
diyAudio Member
Join Date: Oct 2003
Location: Lancaster, PA
Thankfully Newark stocks the caps at 29.99 each.

However, It seems as though the volt rating has gone up from 80 to 100V (no problem there), but the length has increased by .5"!!

I'm going to have to see if I can tweak the Pioneer Chassis a little big to sneak an extra half an inch in there somewhere. If you've ever seen the inside of one of these, things are pretty tight.

They stock a 18,000mFD cap that is the exact same dimension as the original 22,000mFD. Since pioneer greatly oversized the power supplies to begin with (My Kenwood KR-9600 of equal wattage uses 4 much smaller caps), I could probably take the hit in capacitance -- but it just wouldn't feel right!

Thanks for your help, guys.

  Reply With Quote
Old 27th October 2003, 03:20 PM   #5
li_gangyi is offline li_gangyi  Singapore
diyAudio Member
li_gangyi's Avatar
Join Date: Jun 2003
Location: Woodlands Circle
if you cannot squeeze the caps in..you could try piggy backing 2 parelleled caps in position of the original...and make sure you insulate them well..
Kids in the back seat cause accidents...Accidents in the back seat cause kids...
  Reply With Quote


Nippon Chemi-Con CapsHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2 - 56,000uF 80v Nippon Chemi-con caps. mattjk Swap Meet 5 16th March 2005 02:25 AM
Large Nippon Chemi-con caps. mattjk Swap Meet 3 21st February 2005 01:05 AM
2 Nippon Chemi-con caps. 100,000uF 63vdc mattjk Swap Meet 2 24th December 2004 07:11 AM
Big Nippon Chemi-con Caps FS DonJuan Swap Meet 3 14th October 2004 11:28 PM
FS: NEW Nippon Chemi-Con 22000uF 35V Peter2 Swap Meet 0 13th September 2004 11:25 PM

New To Site? Need Help?

All times are GMT. The time now is 03:53 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio