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.

Reusing Backgate caps?
Reusing Backgate 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 5th November 2014, 07:56 PM   #1
reiver is offline reiver  United States
diyAudio Member
Join Date: May 2008
Location: CT
Default Reusing Backgate caps?

I have a pair of amplifier boards from about 2009 that have a pair of 100uf/100v Blackgate FK caps on the rails and a 1000/16v Blackgate BG in the feedback loop. I'm upgrading the boards to newer versions but the only good cap substitutes now seem to be Silmic II or Nichicon FG.

I don't want to get caught in the endless loop of resoldering caps to test the sound...what are opinions on using older Blackgates on a new board? I hate to not use them but at the same time I wonder if they could have lost their magic after several years.
  Reply With Quote
Old 6th November 2014, 05:03 AM   #2
Damon Hill is online now Damon Hill  United States
diyAudio Member
Join Date: Mar 2001
Location: Auburn, WA (somewhere between Seattle and Tacoma)
Send a message via ICQ to Damon Hill
I have had non-polarized Blackgates start to go bad after years in rather warm service, but that might be typical of any electrolytic capacitor. Not being able to test the capacitance and impedance to verify their usability prompted me to buy an ESR meter years ago. These meters are pretty inexpensive as kits on eBay, although I might recommend the Anatek kit at a somewhat higher price as it can also readily check resistance below one ohm.

I think the Nichicon nonpolar caps are good quality parts.

One thing I learned was that very low voltage parts have a significantly higher dissipation factor, so I buy higher voltage parts where they'll fit.
  Reply With Quote


Reusing Backgate caps?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Reusing old transformers stigwurx Power Supplies 4 2nd July 2014 11:10 PM
Reusing Old Sub Boxes? hawkson Subwoofers 6 11th April 2011 06:36 PM
Reusing Old Sub Boxes? hawkson Parts 0 10th April 2011 11:28 AM
reusing a 3-way crossover Gabe85 Analog Line Level 2 8th February 2011 10:59 PM

New To Site? Need Help?

All times are GMT. The time now is 07:25 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio