Hoffman troubles

[Eric H]

Adam, do you need the knobs for that set?

I may have some laying around and failing that I have a set I'm probably going to junk that has some.

[kx250rider]

And I (gulity, gulity!!!) still have them too...

Charles

[compucat]

Wow! The cabinet on that Hoffman looks fabulous. My 1949 Motorola 9VT1 is in a very similar cabinet and needs refinishing. Now that I see what it can look like, I will definitely have to do mine. It's about the same size screen too, only with electrostatic deflection.

[kbmuri]

Adam -

The set looks great!

My first thought on the exploded red goop is that it was a very liberal application, by a previous owner or serviceman, of Corona Dope. I didn't really see it in your open-chassis pictures -- did you remove it?

The photos also show a great deal of the outer conductive coating missing from the picture tube. Did you re-coat it? If so, what product did you use (I have a 10BP4 that needs it)? not, what's the penalty for leaving it off?

All-in-all an excellent thread with good before-and-after shots and lots of good chatter. Great work, all!

[Adam]

Originally Posted by kbmuri

Adam -
My first thought on the exploded red goop is that it was a very liberal application, by a previous owner or serviceman, of Corona Dope. I didn't really see it in your open-chassis pictures -- did you remove it?

The photos also show a great deal of the outer conductive coating missing from the picture tube. Did you re-coat it? If so, what product did you use (I have a 10BP4 that needs it)? not, what's the penalty for leaving it off?

I left the flyback as it is in the earlier picture. I was so relieved to find it was good, that I didn't want to mess with it anymore than I had to.

On the 10BP4 all I did was remove the loose bits of coating. It doesn't seem to have any problems the way it is. Is anybody aware of any products out there for recoating it?

Originally Posted by Eric H

Adam, do you need the knobs for that set?

I may have some laying around and failing that I have a set I'm probably going to junk that has some.

Originally Posted by Kaye-Halbert TV

And I (gulity, gulity!!!) still have them too...

Charles

Charles already went through the trouble of digging those knobs and a few others out for me awhile ago, but if you do decide to junk that other set, I do need the top of the HV cage, and the back. Thanks.



And thanks for all the compliments on the refinish, this is the first one I did, and I was worried when I started that it was going to turn out bad, but it is actually easier to do than I thought it would be.

[kbmuri]

I searched this forum and found two applicable posts:
http://audiokarma.org/forums/showthr...47119#poststop
and
http://audiokarma.org/forums/showthr...42285#poststop

which discuss the re-application of the outer tube coating.

I recently picked up an old Farnsworth, its 10BP4 has a similar loss of outer coating. The seller had a box of junk too which included a motorola chassis that had been sitting in a puddle in a wet basement for a hundred years and was hopelessly lost to corrosion. The 10BP4 was so filthy I had to cut it out and then spray it hard with a garden hose to remove the accumulated gook. It has good phosphor, good filament and good vacuum. Probably still works, but it's not yet tested. I sprayed ALL the aquadag coating off of it though. I sure would like to recoat both tubes.

The two other posts refer to a product, one even gives a part number, but I haven't been able to find a supplier yet. Does anybody have any, or know the best place to get it?