DIY Audio Projects Forum
 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

DIY Audio Projects Forum

Welcome to the DIY Audio Projects Message Forum. Use these forums to discuss Hi-Fi audio and to share your DIY Audio Projects. Registration is free and required to post messages and view the file attachments. Registration will only take a minute and registered users do not see any advertisements. After you have completed the online registration process, check your email (including spam/junk folder) for the verification email to activate your account. New members are under moderation - so your posts will not be visible until approved by a moderator. See the Read Me 1st, Forum RULES and Forum FAQ to get started on the forum.

It is currently 22 May 2018, 18:18

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: 08 Nov 2017, 03:44 
Offline

Joined: 23 Feb 2017, 02:02
Posts: 130
I want some suggestions on what I can do, pin 3 on my Shuguang 12ax7-t had gone loose. It can be wiggled by hand.
Not sure if the vacuum tube is gone, since I had just discovered this.

I never checked my pins even from the start. Not exactly sure if the pins were lose when I revived them brand new.


Top
 Profile  
 
PostPosted: 08 Nov 2017, 06:22 
Offline
User avatar

Joined: 08 Aug 2009, 03:11
Posts: 2208
Location: Chilliwack, BC
Bum tube, replace it. :(

It happens to many manufacturers that get a bad pin-to-glass seal.

_________________
-= Gregg =-
* Ratings are for transistors - tubes have guidelines*
Home: GeeK ZonE
Work: Classic Valve Design


Top
 Profile  
 
PostPosted: 09 Nov 2017, 19:27 
Offline

Joined: 23 Feb 2017, 02:02
Posts: 130
Heres some good news, I had let the tube sit for 24 hours and the tube still works today, I suppose the pin was lose brand new, however it does not leak.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: Diyengineer, Google Adsense [Bot], mwhouston and 7 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Op-amp Projects :: DIY Phono Projects :: DIY Cable Projects :: Hi-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy