Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: rafe on October 24, 2022, 01:46:18 pm

Title: Mullard 6BM8
Post by: rafe on October 24, 2022, 01:46:18 pm
I picked up 2 pairs of matched Mullards(ecl82) early 60's if I recall. They have some green corrosion on the pins not too bad what is the safest way to clean them? Also grabbed NOS 12at7's and others I recognized He has a lot left but mostly used oddball (to me) tubes 
Title: Re: Mullard 6BM8
Post by: bmccowan on October 24, 2022, 05:20:28 pm
I use one of the pin straightener tools and some Deoxit. A few passes in and out of the straightener usually does it. I've seen YouTube vids using a Dremel with wire brush - seems crazy to me. I also keep some 220 grit sandpaper nearby for such things.
I'm curious what you are using them in. I have a Gibson GA-8T and a Little Wing Mini Bassman - both are sweet amps.
Title: Re: Mullard 6BM8
Post by: PRR on October 24, 2022, 09:14:56 pm
Typewriter eraser.

Sorry!
Title: Re: Mullard 6BM8
Post by: rafe on October 24, 2022, 09:32:43 pm
"I'm curious what you are using them in."                                                                                                                                              I have an old Conrad (Japan) stereo amp that uses them. I think my ga-5t
has one also, I would have to look again.
Typewriter eraser.

Sorry!
  :dontknow: All I have is white-out
Title: Re: Mullard 6BM8
Post by: bmccowan on October 24, 2022, 10:07:54 pm
typewriter eraser! good idea.
Yes I think the 5T has that tube. I've often thought of building one of those. Like it?
Title: Re: Mullard 6BM8
Post by: rafe on October 24, 2022, 11:37:05 pm
typewriter eraser! good idea.
Yes I think the 5T has that tube. I've often thought of building one of those. Like it?
yes I  love the ga5t I started to build one a few years ago and need to finish it. I have and old combo late 50's and it has 2 alnico 10's and i need to mate them into that build.those late 50's to 61 Ga5 s and 5ts  are quite amazing! I have both a 5 and a 5t 1960
Title: Re: Mullard 6BM8
Post by: kde on October 25, 2022, 06:27:45 am
I use a Green 3M Scotch Brite heavy duty scourer kitchen pot cleaner pad,
nice & easy slowly carefully drag thru the gap between pins on 9 pin tubes .
Has always worked successfully for me really well.