Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Vintage TV & Radio Tech Forum

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 04-03-2018, 09:02 PM
Wind157 Wind157 is offline
VideoKarma Member
 
Join Date: Apr 2018
Posts: 58
Tube question

Think I found my trouble. Does a 1b3gt tube have any visible glow?
Reply With Quote
  #2  
Old 04-03-2018, 09:48 PM
Kevin Kuehn's Avatar
Kevin Kuehn Kevin Kuehn is offline
Workin' Late Again
 
Join Date: Jan 2011
Location: WI
Posts: 3,824
It's very difficult to see it glow.
Reply With Quote
  #3  
Old 04-03-2018, 10:09 PM
Wind157 Wind157 is offline
VideoKarma Member
 
Join Date: Apr 2018
Posts: 58
Darn, thought I found my problem but it's the X-ray tube so guess I wouldn't see it.
Reply With Quote
  #4  
Old 04-04-2018, 08:27 AM
zeno's Avatar
zeno zeno is offline
VideoKarma Member
 
Join Date: Mar 2013
Location: New Hampshire
Posts: 4,672
HV rectifier tubes rarely glow or just have a slight glow. It
dont take much heat to get the electron to make the jump
at HV. Best quick test is:
Unplug the top cap & let it hang away from metal.
Take a GOOD well insulated screwdriver & get it near the metal
of the cap. You should get a healthy apx 1/2 inch arc.
If not its the horz osc, output or damper IF its a tube.

73 Zeno
LFOD !
Reply With Quote
  #5  
Old 04-04-2018, 12:02 PM
benman94's Avatar
benman94 benman94 is offline
Resident Lunatic
 
Join Date: Jun 2011
Location: Detroit, MI
Posts: 1,190
If a 1B3 is gassy, it will often light up a bright pink, sometimes violet, depending on the identity of the intruding gas.
Reply With Quote
Audiokarma
Reply


Thread Tools
Display Modes

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 03:57 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
©Copyright 2012 VideoKarma.org, All rights reserved.