Bottlehead Forum

General Category => General Discussion => Topic started by: BenjaminSmith on July 12, 2022, 11:59:33 AM

Title: Repairing a Loose Tube Base?
Post by: BenjaminSmith on July 12, 2022, 11:59:33 AM

I received two 150C1 tubes from Britain, Mullard NOS. One is perfect and the other has a very loose base.  I haven't tested that tube, but assuming the wiring is intact is there a way to perhaps epoxy pot the base?  I cannot see it surviving even one removal from the octal Euro socket (there's very little of the base showing to grip when removing from socket.)  Opinions?

Title: Re: Repairing a Loose Tube Base?
Post by: lms on July 12, 2022, 03:39:22 PM

https://www.youtube.com/watch?v=vOacTUYSyiw

Title: Re: Repairing a Loose Tube Base?
Post by: Doc B. on July 12, 2022, 04:03:28 PM

A twelve minute video about putting a drop of super glue in the tube base. Thankfully one can scrub thru a youtube.

Title: Re: Repairing a Loose Tube Base?
Post by: lms on July 14, 2022, 01:50:29 PM

LOL, that's themtube for ya.

Title: Re: Repairing a Loose Tube Base?
Post by: BenjaminSmith on July 15, 2022, 04:56:49 PM

funny in that I just received a message from the seller offering profuse apologies but no remedy.  Then he said do not ever use superglue as it'll cause the glass to crack.  He suggested shellac instead.  Back to the youtube drawing board :)

Title: Re: Repairing a Loose Tube Base?
Post by: Tubegopher on July 15, 2022, 05:19:35 PM

Quote from: BenjaminSmith on July 15, 2022, 04:56:49 PM

funny in that I just received a message from the seller offering profuse apologies but no remedy.  Then he said do not ever use superglue as it'll cause the glass to crack.  He suggested shellac instead.  Back to the youtube drawing board :)

I have used super glue as an excellent repair on loose bases for 20 years. I have never had a problem and it is quite discreet.
Regards,
Don