Threshold 400a power switch - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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 30th December 2007, 10:34 PM   #1
j beede is offline j beede  United States
diyAudio Member
 
Join Date: Dec 2007
Default Threshold 400a power switch

After many years of relaibale service the power switch/breaker seems to have failed on my 400a. I powered it on and the breaker immediately flicked off. Now the switch is loose and exhibits no mechanical resistance to moving into the on or off position. I can see no "reset" for the switch. Is this the normal failure mode? Does anyone know of a replacement switch for this old amplifier?
...j
  Reply With Quote
Old 31st December 2007, 06:08 PM   #2
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Most of the 400A's had a breaker made by Heinemann. I
suggest you try their website for dimensions and such,
and note that there are alternate manufacturers for their
products.

  Reply With Quote
Old 31st December 2007, 06:14 PM   #3
KBK is offline KBK  Canada
diyAudio Member
 
Join Date: Dec 2003
Location: The Wilds Of Canada
What can one say about a company called 'AssMan?
  Reply With Quote
Old 31st December 2007, 10:58 PM   #4
j beede is offline j beede  United States
diyAudio Member
 
Join Date: Dec 2007
Quote:
Originally posted by Nelson Pass
Most of the 400A's had a breaker made by Heinemann. I
suggest you try their website for dimensions and such,
and note that there are alternate manufacturers for their
products.

Thanks for the quick reply NP,
Yes, I pulled the switch and it is indeed a Heinemann JC1-A8-BB-A. That part number does not produce may hits via Google :| I am still searching for a datasheet for this particular switch. This makes me think that they are not ordinarily failure prone. Any DIY'ers already found a form/fit/function replacement from prior repairs?

The good news is that in spite of the switch's failure the amplifier is intact... I replaced the switch with a 10 amp fuse and it is making good music as I type this.
...j
  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
Threshold 400A Power supply help Mywing Pass Labs 8 4th May 2009 01:46 AM
Power switch Threshold SA3 Tino Pass Labs 2 17th July 2007 08:53 PM
Threshold 400a Rolexmonger Pass Labs 10 12th July 2007 04:51 AM
Threshold 400a Rolexmonger Pass Labs 1 22nd March 2007 08:03 AM
Threshold 400A Airedale Pass Labs 2 17th January 2005 10:57 PM


New To Site? Need Help?

All times are GMT. The time now is 05:21 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