Go Back   Home > Forums > Design & Build > Parts
Home Forums Articles Links Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

We're saving for a new server - help us to serve you by Donating Today and become a friend with benefits!

Ads on/off / Custom Title / 2009 Tshirt / More PMs / Bigger Images / Advanced printing
Reply
 
Thread Tools
Old 28th June 2007, 12:25 AM   #1
diyAudio Member
 
Join Date: Dec 2006
Default main power transformer for Fisher

Anybody know where to find a main power transformer for a Fisher "Studio Standard" model CA885? The part number is 4-2512-23700, a google search without the dashes turned up one result but, alas, it is no longer available and the site recommends a substitute part which it doesn't provide. I can't find any information about the transformer, either, and neither the shop manual nor the schematic give the output voltage. If I only knew what the output voltage is I could probably find something to replace it with. See the attached pics. Thanks.Click the image to open in full size. Click the image to open in full size. Click the image to open in full size.
  Reply With Quote
Old 28th June 2007, 11:19 PM   #2
diyAudio Member
 
XEAGLEKEEPER's Avatar
 
Join Date: Jan 2006
Location: central Iowa
I take it ,it is 117vac primary , what secondary voltages do you need. And what is the pin spacing measurements.
__________________
Murphy's Law : $10 transistor will always blow before the 10 cent fuse. Murphy was a optimus.
__________________
Ret. USAF
  Reply With Quote
Old 2nd July 2007, 08:51 AM   #3
AndrewT is offline AndrewT  
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
main power transformer? it looks tiny, is this a pre-amp?
where in the circuit is it fitted?
__________________
regards Andrew T.
  Reply With Quote
Old 2nd July 2007, 12:10 PM   #4
diyAudio Member
 
Join Date: Dec 2006
It's called a main power transformer in the schematic, it provides power to the function control, the remote and the main power relay circuits. There's a much bigger transformer -- the sub power one -- for the main amplifier circuit.
This little transformer turned out not to be the problem with this amp, a 5.6 volt zener diode used as a voltage regulator was the problem, apparently a victim of line voltage surge. Thanks for the replies.
  Reply With Quote
Old 2nd July 2007, 10:53 PM   #5
diyAudio Member
 
XEAGLEKEEPER's Avatar
 
Join Date: Jan 2006
Location: central Iowa
Zener is a hell of alot cheaper than transformer....Good for you..
__________________
Murphy's Law : $10 transistor will always blow before the 10 cent fuse. Murphy was a optimus.
__________________
Ret. USAF
  Reply With Quote

Reply


Hide this!Advertise here!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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
need output transformer for Fisher malcolm mccord Tubes / Valves 13 9th February 2009 01:57 AM
help analysing my main AC power milen007 Everything Else 6 27th June 2008 07:15 PM
230 V main power filter spirou38 Power Supplies 0 18th January 2007 12:31 PM
Help for SE Main Transformer baikostov Tubes / Valves 4 24th September 2006 09:01 AM
Where to get Philips CD880 Main Transformer? Tubeee Parts 2 22nd February 2005 12:19 PM


New To Site? Need Help?

All times are GMT. The time now is 05:53 AM.

Page generated in 0.13740802 seconds (78.59% PHP - 21.41% MySQL) with 10 queries

Copyright ©1999-2009 diyAudio