Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Early B&W and Projection TV

Notices

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 08-13-2015, 08:12 AM
Kamakiri's Avatar
Kamakiri Kamakiri is offline
Administrator
 
Join Date: Jun 2002
Location: Buffalo, New York
Posts: 5,109
Value of this micamold?

I'm horrible with these. Can anyone give me the value of this cap?

Thanks!!!
Attached Images
File Type: jpg 100_6224.jpg (71.9 KB, 59 views)
__________________
"Restoring a tube TV is like going to war. A color one is like a land war in Asia."
Reply With Quote
  #2  
Old 08-13-2015, 09:16 AM
Kamakiri's Avatar
Kamakiri Kamakiri is offline
Administrator
 
Join Date: Jun 2002
Location: Buffalo, New York
Posts: 5,109
This cap goes between pins 4 and 5 of the 6J5 in an RCA 8TS30. I have this cap at .0047 now from the RCA factory manual. This is one of the "larger" Aerovox caps. I'm having vertical drifting issues with this set, and thought I'd replace it. Do I need a mica here or is it a standard cap?
__________________
"Restoring a tube TV is like going to war. A color one is like a land war in Asia."
Reply With Quote
  #3  
Old 08-13-2015, 09:24 AM
oldtvsandtoy oldtvsandtoy is offline
Banned
 
Join Date: Aug 2009
Location: Clinton Township , Michigan
Posts: 285
Quote:
Originally Posted by Kamakiri View Post
This cap goes between pins 4 and 5 of the 6J5 in an RCA 8TS30. I have this cap at .0047 now from the RCA factory manual. This is one of the "larger" Aerovox caps. I'm having vertical drifting issues with this set, and thought I'd replace it. Do I need a mica here or is it a standard cap?
Did you check here? http://www.tpub.com/neets/book2/3g.htm
Reply With Quote
  #4  
Old 08-13-2015, 09:38 AM
ChuckA's Avatar
ChuckA ChuckA is offline
VideoKarma Member
 
Join Date: Jun 2002
Location: Eastern Pennsylvania
Posts: 447
Quote:
Originally Posted by Kamakiri View Post
I'm horrible with these. Can anyone give me the value of this cap?

Thanks!!!
4700pF / .0047uF

White= Mica
Yellow = 4
Violet = 7
Red = x100
Green = +/- 5%


Chuck
__________________
www.myvintagetv.com

Learn from the mistakes of others -
You can't live long enough to make them all yourself.
Reply With Quote
  #5  
Old 08-13-2015, 09:39 AM
Kamakiri's Avatar
Kamakiri Kamakiri is offline
Administrator
 
Join Date: Jun 2002
Location: Buffalo, New York
Posts: 5,109
That's the problem, this is an Aerovox with no distinguishable arrow. But as I mentioned, I ended up identifying it in the RCA manual as a .0047. Now I just need to know if a standard cap will work.
__________________
"Restoring a tube TV is like going to war. A color one is like a land war in Asia."
Reply With Quote
Audiokarma
  #6  
Old 08-13-2015, 10:05 AM
ChuckA's Avatar
ChuckA ChuckA is offline
VideoKarma Member
 
Join Date: Jun 2002
Location: Eastern Pennsylvania
Posts: 447
Quote:
Originally Posted by Kamakiri View Post
That's the problem, this is an Aerovox with no distinguishable arrow. But as I mentioned, I ended up identifying it in the RCA manual as a .0047. Now I just need to know if a standard cap will work.
You probably want to replace with a mica, but a regular poly will work to see if it fixes your problem


Chuck
__________________
www.myvintagetv.com

Learn from the mistakes of others -
You can't live long enough to make them all yourself.
Reply With Quote
  #7  
Old 08-13-2015, 11:18 AM
John Folsom's Avatar
John Folsom John Folsom is offline
VideoKarma Member
 
Join Date: May 2004
Location: Melbourne Florida
Posts: 932
Sams IDs your cap as 4700pf @ 500VDC, which would make it a silver mica. However, as Chuck said, a poly will work well enough to allow you to diagnose your problem.
__________________
John Folsom
Reply With Quote
  #8  
Old 08-13-2015, 12:53 PM
Kamakiri's Avatar
Kamakiri Kamakiri is offline
Administrator
 
Join Date: Jun 2002
Location: Buffalo, New York
Posts: 5,109
Having a vertical linearity issue, replaced some out of tolerance resistors on the last go-round. Stuffed in the .0047, and it seems about 50% better. Not 100%, but much better than it was
__________________
"Restoring a tube TV is like going to war. A color one is like a land war in Asia."
Reply With Quote
Reply



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


All times are GMT -5. The time now is 06:09 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2026, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.