Caps leaking? - Yamaha A1020 - diyAudio
Go Back   Home > Forums > Design & Build > Parts

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

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
Reply
 
Thread Tools Search this Thread
Old 21st April 2010, 08:11 AM   #1
diyAudio Member
 
Join Date: Apr 2010
Default Caps leaking? - Yamaha A1020

I adjusted the idle current on my Yamaha A1020, and noticed some residue at the base of two pairs of caps (see pictures). Is this just glue as I have read something about this, or should the caps be replaced? I do not notice any changes in the sound.

The first pair of caps are Rubicon Black Gate F 25V 1000uF:

Click the image to open in full size.


The second pair are Nichicon 25V 1000uF:

Click the image to open in full size.

This is a newbie question, so sorry if the answer is obvious.....

Also, sorry for the picture quality - if required I can try to get better pictures.....

If I need to replace the caps, I would appreciate suggestions of what caps to by, and where to by them... The Rubicons are part of the power supply circuit and the Nichicons are part of the Eq amp.
  Reply With Quote
Old 21st April 2010, 11:25 PM   #2
amc184 is offline amc184  New Zealand
diyAudio Member
 
amc184's Avatar
 
Join Date: May 2007
Location: Christchurch
The caps in the second photo are definitely glued. Leaking electrolyte isn't very thick, it won't pile up against a cap like that.

The caps in the first photo might be leaking, but I can't really tell. That's not a great photo. Is the brown stuff corroding the surrounding components?

If the amp is more than 15 years old and you still want to get the best out of it, you should be looking at replacing the caps regardless of whether they are leaking or not.
  Reply With Quote
Old 21st April 2010, 11:48 PM   #3
Glowbug is offline Glowbug  United States
diyAudio Member
 
Glowbug's Avatar
 
Join Date: Feb 2006
Location: Hillsborough, NC
Quote:
If I need to replace the caps, I would appreciate suggestions of what caps to by, and where to by them..
Mouser & Digi-Key would be the places I'd check first

And yeah...a re-cap would be a good idea anyway. Very simple fix.

Welcome to DIYAudio
__________________
Jim
The machine does not isolate us from the great problems of nature but plunges us more deeply into them. - Antoine de Saint-Exupéry
  Reply With Quote
Old 22nd April 2010, 03:57 AM   #4
Enzo is offline Enzo  United States
diyAudio Member
 
Join Date: Sep 2004
Location: Lansing, Michigan
In both cases, that looks like glue to me. PArts that stick up from the board are more likely to vibrate back and forth and crack free of their solder. Manufacturers often glue larger parts down to prevent this.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yamaha Nippon-chemi 10,000 uf 71V caps (india) suds Group Buys 0 16th April 2010 09:44 AM
White residue sign of Leaking Caps? clm811 Parts 4 15th October 2009 09:54 PM
leaking current jb_val Solid State 15 15th December 2005 11:00 PM
Luxkit A1020 need help!!! huytienluu Tubes / Valves 4 28th October 2004 10:26 AM
Are my caps leaking or glued on? Zuma Parts 7 24th September 2003 02:43 AM


New To Site? Need Help?

All times are GMT. The time now is 08:01 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2