Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: eleventeen on March 14, 2016, 07:25:36 pm

Title: In 40 years of messing with tubes, never seen this before
Post by: eleventeen on March 14, 2016, 07:25:36 pm

Plowing through the enormous pile of hi-fi junk I bought for parts this last weekend, this is a 6AU6 from "the next piece I picked from the pile". Can you see it? Missing pin. When I pulled the tube, pin 5 was left behind in the socket. I have never seen this on a tube that apparently still retains its vacuum.


(http://i172.photobucket.com/albums/w32/ttm4/missing_pin_zpsiohxklql.png) (http://s172.photobucket.com/user/ttm4/media/missing_pin_zpsiohxklql.png.html)

Title: Re: In 40 years of messing with tubes, never seen this before
Post by: Willabe on March 15, 2016, 12:35:36 am

Just glue it back in.    :laugh:

Title: Re: In 40 years of messing with tubes, never seen this before
Post by: Paul1453 on March 15, 2016, 01:00:06 am

Quote from: Willabe on March 15, 2016, 12:35:36 am

Just glue it back in.    :laugh:

If it were a rare tube that I didn't have any of, I'd probably give that a try Willabe.   :l2:

But I already have a big bag of 6AU6s.
I'd bet you do too, Eleventeen.   :icon_biggrin:

Title: Re: In 40 years of messing with tubes, never seen this before
Post by: TIMBO on March 15, 2016, 01:18:53 am

I had a 12AX7 do that just recently and of course it was old.
I can imagine that lots of years heating and cooling, left on a shelf for another lot of years, bit of corrosion, end of story. Thanks