can you id this component - 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 26th February 2009, 11:40 AM   #1
moss99 is offline moss99  United Kingdom
diyAudio Member
 
Join Date: Feb 2009
Default can you id this component

Hi all i have a pair of mission 731 speakers which the tweeter in one does not work i have continuity through the driver which led me to the xover i have put a photo up ,,
I think the component with 475K 100V written on it is at fault i have removed it and am getting an open circuit reading is this a resistor of some type and any idea where to get one ?
Attached Images
File Type: jpg 731 b.jpg (88.7 KB, 242 views)
  Reply With Quote
Old 26th February 2009, 11:43 AM   #2
poynton is offline poynton  United Kingdom
diyAudio Member
 
poynton's Avatar
 
Join Date: Mar 2005
Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
It is a capacitor and will read open circuit.

Please post a photo or 2

Andy
__________________
If it ain't broke, break it !! Then fix it again. It's called DIY !
  Reply With Quote
Old 26th February 2009, 12:51 PM   #3
diyAudio Member
 
Frank Berry's Avatar
 
Join Date: Sep 2003
Location: Midland, Michigan
Probably 4.7 uf @ 100 volts.
__________________
Frank
  Reply With Quote
Old 26th February 2009, 01:27 PM   #4
pilli is offline pilli  France
diyAudio Member
 
Join Date: Aug 2006
Default Re: can you id this component

Quote:
Originally posted by moss99
I think the component with 475K 100V written on it is at fault i have removed it and am getting an open circuit reading is this a resistor of some type and any idea where to get one ?
As it's been said, the marking "sounds" like a capacitor ("K" is the tolerance code)
and a capacitor is supposed to give an open circuit reading (on an ohm-meter) when it is good, there's a dielectric (isolation) in there...


Quote:
i have put a photo up
I don't think we can see it.
_
  Reply With Quote
Old 26th February 2009, 01:30 PM   #5
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
You can test the capacitor by connecting to an ohmeter and taking a reading. Then reverse the leads. If the capacitor is good you will see continuity until the cap charges up. After this happens you will see open cct again. Reverse the leads again and you will see the cap discharge and then charge again to an "open cct state". If you get this then the cap is ok. If you don't then it really is open. Use a high range scale like 200k on your meter.

Cheers
Quasi
  Reply With Quote
Old 26th February 2009, 07:35 PM   #6
moss99 is offline moss99  United Kingdom
diyAudio Member
 
Join Date: Feb 2009
Hmmm i can see the photo i did have a bit of trouble posting the photo i will try again ,,
Mission have e-mailed me back today they only sell the whole crossover not the components,,
  Reply With Quote
Old 26th February 2009, 08:33 PM   #7
mjf is offline mjf  Austria
diyAudio Member
 
Join Date: Jan 2009
Location: Austria
hello.
i think it is a (film/foil)cap with 4,7uf/100v.
greetings.........
  Reply With Quote
Old 26th February 2009, 08:46 PM   #8
pilli is offline pilli  France
diyAudio Member
 
Join Date: Aug 2006
Now the photo is visible.
Could you post the picture or schematic (it shouldn't be too difficult to trace it)
of the whole crossover?

-
  Reply With Quote
Old 27th March 2009, 08:02 AM   #9
diyAudio Member
 
Join Date: Jun 2008
The value is 4700000 pF, 10%, 100 volts. In other words its 4.7uF
  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
SMD Component ID Perry Babin Parts 2 29th June 2008 05:13 AM
What is this component used for? Mrpong Parts 6 31st August 2004 11:15 AM


New To Site? Need Help?

All times are GMT. The time now is 05:49 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