Hoffman 7M112 tabletop

[josephdaniel]

I was going to make a thread about this, but I figured that I could post it here...
Does anyone know anything about the easy vision model 7B-157?

[WISCOJIM]

Originally Posted by josephdaniel

I was going to make a thread about this, but I figured that I could post it here...
Does anyone know anything about the easy vision model 7B-157?

Probably should start your own thread, as Phil's Hoffman's set doesn't appear to be an Easy-Vision set, so what you are asking about doesn't fit under this topic.

.

[josephdaniel]

Originally Posted by WISCOJIM

Probably should start your own thread, as Phil's Hoffman's set doesn't appear to be an Easy-Vision set, so what you are asking about doesn't fit under this topic.

.

I guess so... :p
Sorry, I want attempting to hijack your thread Phil...

[Phil Nelson]

Well, already I got my basic question answered, so no harm done. It's usually less confusing if you don't mix up threads, though.

I was about to ask dieseljeep if he knows of any other 17" tubes that can sub for a 17HP4, when I thought to check this one, just in case. After about 90 seconds on the tester, the needle cruised up into the happy zone.



It may not be the greatest tube on Planet Earth, but I'm betting it will make a picture. I'll set the brightener aside and try the set bareback when its turn comes.

Phil Nelson

[dieseljeep]

Originally Posted by Phil Nelson

Well, already I got my basic question answered, so no harm done. It's usually less confusing if you don't mix up threads, though.

I was about to ask dieseljeep if he knows of any other 17" tubes that can sub for a 17HP4, when I thought to check this one, just in case. After about 90 seconds on the tester, the needle cruised up into the happy zone.



It may not be the greatest tube on Planet Earth, but I'm betting it will make a picture. I'll set the brightener aside and try the set bareback when its turn comes.

Phil Nelson

The only CRT that fit, mechanically would be a 17BP4, but it is a magnetically focused CRT. You would have to furnish and mount a PM focus unit.
Good thing the CRT is good. It looks like a replacement to me.

[robert1]

Originally Posted by Phil Nelson

After about 90 seconds on the tester, the needle cruised up into the happy zone.

That's typical of any C.R.T. that has sit unused for many years.. it usually takes about 15 miniutes of warmup time for it to come up to full emmission.

Originally Posted by Phil Nelson

It may not be the greatest tube on Planet Earth, but I'm betting it will make a picture. I'll set the brightener aside and try the set bareback when its turn comes.

by the looks of the meter, that appears to be a strong healthy tube.
you may need to examine that "brightener" to make sure that it is not a 1:1 ratio isolation transformer. that tube may have had a intermittant fil to cathode short.

[jr_tech]

Originally Posted by josephdaniel

I was going to make a thread about this, but I figured that I could post it here...
Does anyone know anything about the easy vision model 7B-157?

Photofact here:
http://www.ebay.com/itm/like/3604050...ectorid=229466
Looks like a 21" version of the set Phil has.

Not affiliated,
jr