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-   -   My latest acquisition (http://www.videokarma.org/showthread.php?t=257637)

josephdaniel 03-14-2013 06:29 PM

My latest acquisition
 
Today I picked up a small little ge hybrid for 20.00 it seems to work but haven't gotten to a rf source to be sure
There also was a philco princess for 130 with audio and a weak rasterhttp://img.tapatalk.com/d/13/03/15/2y5egadu.jpghttp://img.tapatalk.com/d/13/03/15/e9u5etu3.jpghttp://img.tapatalk.com/d/13/03/15/hysa9u4a.jpghttp://img.tapatalk.com/d/13/03/15/unedasyt.jpghttp://img.tapatalk.com/d/13/03/15/a4eteme7.jpg

holmesuser01 03-14-2013 09:26 PM

I had this GE in avocado. Ran about 10 years, before the plastic handle broke and it rolled down the steps.

josephdaniel 03-15-2013 08:33 AM

From what I have read it seems the little sets think theyr made better than they really are. I this set has all of its orginal tubes from 1974 except for one on the tuner

dieseljeep 03-15-2013 11:18 AM

Quote:

Originally Posted by josephdaniel (Post 3064345)
From what I have read it seems the little sets think theyr made better than they really are. I this set has all of its orginal tubes from 1974 except for one on the tuner

It looks like someone hung in a large wire wound resistor toward the front.
The SF had some novel circuitry, to make it an interesting set.
I have one with the longer, horizontal cabinet, in beautiful walnut grain plastic. The CRT is slightly tired. :sigh:

josephdaniel 03-15-2013 11:42 AM

The one on the left in the first pic? If so I noticed that one but didn't know if it was orgional.
Also if anyone has a spare VHF knob and a fine tuneing knob I would appreciate it!

dieseljeep 03-15-2013 12:00 PM

Quote:

Originally Posted by josephdaniel (Post 3064345)
From what I have read it seems the little sets think theyr made better than they really are. I this set has all of its orginal tubes from 1974 except for one on the tuner

BTW, the tuner tubes are branded Sarkes Tarzian, the maker of the tuner.
Mine's an earlier model, 1973, without the click-stop UHF tuner. :yes:

old_coot88 03-15-2013 01:00 PM

Those little GEs were suprizingly durable considering the cheap-looking construction. But one frequent problem was the H. osc coil which would break at the lugs or pull out of the board.
And there was a quirk in the design (which may or may not apply to your set). The H. oscillator would refuse to start. Sometimes you could get it started by clicking the set on and off, or sometimes it wouldn't start at all. Come to find the oscillator runs on B Boost instead of the B+ supply.

The cure was to run a Si diode and a resistor (i forget the value) from the osc. to the B+ rail, so the osc. would start on B+. Then when the Boost came up, the diode became reverse-biased and the osc. switched seamlessly over and ran on Boost as designed. But it would start every time, on B+.

The H. output would not red-plate with the oscillator dead since the B+ was only 130V.

josephdaniel 03-15-2013 03:12 PM

Ok then that means all if the tubes are orgional to the set.
Also what year were the continuous UHF tuners banned? This one has the continuous tuner and all of the tubes are dated 1974

dieseljeep 03-15-2013 03:46 PM

Quote:

Originally Posted by josephdaniel (Post 3064380)
Ok then that means all if the tubes are orgional to the set.
Also what year were the continuous UHF tuners banned? This one has the continuous tuner and all of the tubes are dated 1974

Possibly for the 1975 model year. Not sure when it was mandatory. :scratch2:

RDusel 03-15-2013 04:56 PM

Ahh, the venerable SF chassis. I have had 3 of the space age looking late models with the tuner knobs at the top and they all worked with original parts. On the last one I was using it extensively as an attic TV and it finally developed a bad section on the electrolytic and formed a buzz and hum bars.
Incidentally, there was only one 3 section electrolytic in mine and no wax caps. Replaced the electrolytic and it works great again.

radiotvnut 03-15-2013 05:16 PM

Does anyone know when the SF was discontinued? I'm sure they were still around in '76; but, don't know if they were offered later.

dieseljeep 03-16-2013 09:23 AM

Quote:

Originally Posted by old_coot88 (Post 3064369)
Those little GEs were suprizingly durable considering the cheap-looking construction. But one frequent problem was the H. osc coil which would break at the lugs or pull out of the board.
And there was a quirk in the design (which may or may not apply to your set). The H. oscillator would refuse to start. Sometimes you could get it started by clicking the set on and off, or sometimes it wouldn't start at all. Come to find the oscillator runs on B Boost instead of the B+ supply.

The cure was to run a Si diode and a resistor (i forget the value) from the osc. to the B+ rail, so the osc. would start on B+. Then when the Boost came up, the diode became reverse-biased and the osc. switched seamlessly over and ran on Boost as designed. But it would start every time, on B+.

The H. output would not red-plate with the oscillator dead since the B+ was only 130V.

The SF chassis has a FET horizontal oscillator and a transistor horizontal driver.
Did they run that circuit from the boost?
I remember, I had that problem with the sets using the 8LT8. :sigh:

old_coot88 03-16-2013 01:16 PM

Quote:

Originally Posted by dieseljeep (Post 3064449)
The SF chassis has a FET horizontal oscillator and a transistor horizontal driver.
Did they run that circuit from the boost?
I remember, I had that problem with the sets using the 8LT8. :sigh:

Dang, i missed the statement that the set is a hybrid. Better learn to read better. The H osc problem was on the all-tube sets.
Mucho apologies for the goof.

dieseljeep 03-16-2013 01:50 PM

Quote:

Originally Posted by old_coot88 (Post 3064467)
Dang, i missed the statement that the set is a hybrid. Better learn to read better. The H osc problem was on the all-tube sets.
Mucho apologies for the goof.

I goofed as well. I scrapped a few old GE's models because of the horizontal oscillator failure.
Admiral also made a clone of this set, that had the same problem. :no:

dieseljeep 03-16-2013 01:57 PM

Quote:

Originally Posted by old_coot88 (Post 3064467)
Dang, i missed the statement that the set is a hybrid. Better learn to read better. The H osc problem was on the all-tube sets.
Mucho apologies for the goof.

I goofed as well. I scrapped a few old GE's models because of the horizontal oscillator failure.
Admiral also made a clone of this set, that had the same problem. :no:


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