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  #16  
Old 03-04-2016, 08:51 PM
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vts1134 vts1134 is offline
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Quote:
Originally Posted by Username1 View Post
Yah, that's pretty cool..... I think I would not touch anything inside....
If the sound part works, I bet the picture part does too....
Crank that sucker up !

.
Sadly no. There are quite a few more components between antenna in and the kinescope than there is between phono in and the speaker. The kinescope's filament does light but a lack of raster suggests no high voltage. I didn't wait around at full voltage for more than a minute to troubleshoot, I didn't want to press my luck. I figured if it wanted to work it would have done so. It's seen enough excitement for a while. I think I'll allow it to retire again for a short time, this time in loving appreciative hands.
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  #17  
Old 03-04-2016, 10:08 PM
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Wow! Talk about showroom clean! Incredible find.
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  #18  
Old 03-04-2016, 10:13 PM
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WOW!!! WOW!!! WOW!!!
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  #19  
Old 03-05-2016, 10:57 AM
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Great find. All the good sets are back east.
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  #20  
Old 03-05-2016, 11:19 AM
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Simply amazing. I would love to hear the story about how it survived all those years in an abandoned department store!
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  #21  
Old 03-05-2016, 11:23 AM
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Fantastic! Did you end up making the drive?
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  #22  
Old 03-06-2016, 07:19 AM
ronl ronl is offline
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Wow, Wow,Wow to infinity-lol!
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  #23  
Old 03-06-2016, 03:20 PM
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Wow.... You are TRULY "A LUCKY Dawg..." (grin)
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  #24  
Old 03-06-2016, 04:45 PM
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Great find. All the good sets are back east.
The Chicago area ALSO seems to hold a lot of good stuff...too !!
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  #25  
Old 03-06-2016, 07:09 PM
GKinTN GKinTN is offline
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WOW!

It would be very cool to get this set running with minimal component changes.

One thing you could try on the electrolytics is a reforming technique that has been circulating the vintage guitar amp and audio world for several years now. This link describes the technique, but the jist of it is you add a 2 watt 100k resistor right before the power supply caps (basically in series with the B+) and then measure the voltage drop across this resistor. Some caps may only take a half hour to reform, some may take a day, and some may simply not be savable. That said, this should also be also be used along with a variac for safety, but with the inline resistor trick your caps (if savable) can be reformed in a self regulating manor. In this case you would remove all the tubes (I'd suggest a plug in solid state tube rectifier replacement for the power up) and keep the main AC down a bit with the variac since the power supply may go a bit higher than normal without the tubes in the circuit. You don't want to exceed the voltage rating of the caps! Anyway it's a cool trick and as I mentioned self regulating, as opposed to slowly working up a variac over time which is still a guessing game.

http://forum.metroamp.com/viewtopic.php?f=4&t=8396

Last edited by GKinTN; 03-06-2016 at 07:21 PM.
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  #26  
Old 03-06-2016, 07:50 PM
old_coot88 old_coot88 is offline
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That's a neat idea for equipment in which there's no ohmic load on the B+ supply with all the tubes removed.
But in TVs of this vintage, there's often bleeder/divider resistors of less than 20K across the B+.
With the forming voltage supplied through a 100K resistor, the caps would never see but a fraction of their rated voltage.
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  #27  
Old 03-08-2016, 12:54 AM
GKinTN GKinTN is offline
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I figured that would be the case. Still, you could isolate each cap to reform. That said, perhaps this is a TRK-12... perhaps THE TRK-12 that needs to simply be preserved in "as found" condition. I couldn't leave it alone though, I'd want to see it "alive"!

Last edited by GKinTN; 03-08-2016 at 12:59 AM.
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  #28  
Old 03-08-2016, 05:01 AM
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Originally Posted by GKinTN View Post
I figured that would be the case. Still, you could isolate each cap to reform. That said, perhaps this is a TRK-12... perhaps THE TRK-12 that needs to simply be preserved in "as found" condition. I couldn't leave it alone though, I'd want to see it "alive"!
I'd have it on my repairman's bench the next day. No way I could leave any of these classic sets as static displays. It was designed to televise and still should be doing so.
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  #29  
Old 03-08-2016, 05:23 AM
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This score is about as good as finding a Guttenberg bible in an old trunk in yr Mamaw's house.. Or stumbling over a "Patent Motorenwagen" in the barn. Wonder how many lines per the CRT its set up for ? 441?
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  #30  
Old 03-08-2016, 11:33 AM
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Congratulations on your fantastic find.

-Steve D.
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