An Admiral to Admire
 

A continuation from "Viewers Choice". Not less than five minuts have past from having finishing the Dumont Doghouse and now the Admiral sits on the bench. It will need 3 tubes a bunch a caps and a little advise if i find myself in rough waters.
http://www.pbase.com/redraster/image/137047652.jpg

Adorable! I love these TV's in nature shots. There’s just something special about Bakelite lying in the green grass. :naughty: :D

I always liked that model Admiral. That set looks like a little old lady used it to watch church services on Sunday morning and kept it covered the rest of the time.

Beautiful set. I feel privileged to have seen this very TV on my kitchen table!:banana:

that is really just too cute.

The rise and fall of an Admiral
 

Overcome with the thrill of success i had the guts back in the cabinet so quick onlly to have it flat line on me the next day.

http://www.pbase.com/redraster/image/137869028.jpg
Got this one up and running in little time only to flat line. :tears:
http://www.pbase.com/redraster/image/137893733.jpg
No vertical sweep so i checked the plate voltage on the vertical output
tube (12AU7) i'm missing the 390 volts, Oh crap! according the schematic
the only path for the 390 volts is the primary of T402 the vertical output
transformer seen in the foreground. To my amazement i tried a transformer
from a scrap Admiral (24A12X), fastening it to the chasis with two screws going through side vents. Ugly yes but it works.

http://www.pbase.com/redraster/image/137893736.jpg
The original has 700 ohm pri /12 ohm sec and the one i put in is 500 ohms pri / 9 ohms sec and despite all of that i took very little to set up the vertical
height and linaritey. I would like to find an original transformer part #79B24-1,Simular 20Y1 chasis
Another avenue of hope is a audio output transformer i saw in a parts catalog one with 600 ohm pri / 8 ohm sec and of course designed to handle plate voltage. :scratch2:

That Admiral is a really nice looking set. What years were they sold? I'll guess 1951-52.

Carl

Set came out in mid-1949, as a 1950 model. I think that was the last year for the round CRT. The smallest set in the 1951 line was the 14" rectangular.

Sometimes the failure in a transformer is a break right at the terminal, or the transision from the magnet wire to the lead wire. Left over rosin from the soldering process at the factory can corrode the thin wire over the years, and cause a weak point that opens like a fuse. You might try cutting open the outer wrap on the windings of the bad transformer to see if that's what it is.

Yeah, I've always thought those "Squared-Roundie" sets were Tres Kewl ! Never saw one in person, just in old magazines like Nat Geo...

Just a slight misquote. I meant the 12" all glass CRT. The round tube sets of the 1951 model year were the 16" and 19" metal/glass CRT's.

Great Wa2ise advice, i have had success with others but not on this one it looks like the break is in deep as i to tried checking for continuity on freashly tinned ends on the winding wire with no good results. However i am relieved
that that transformer i stuck in there seems to be working fine till i find a closer match. (I was able to watch wheel of fortune and the price is right without have a incling to play with the height and linaritey controls) :yes:

I am not a Admiral expert and for what i'ts worth i found a date stamped on the tuner (May 31 1950). Having found this Admiral fun work on and addictive i will try and find some more!.

Possibly, the Canadian Admiral product line, might have been slightly different. In the USA, the 12" roundie was falling out of favor. IIRC, the smaller manufacturers still built them a little later. Possibly as a value leader. Kind of like the round tube color sets.

That's a good looking picture. If it's stable and you can achieve the right height, linearity, and centering, I'd declare victory and move on to the next project.

Yes, I know it's not exactly the original part, but when was the last time you pulled the chassis out of a workingTV to show the underside to a visitor?

Just my $0.02.

Phil Nelson