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Old 08-29-2010, 04:40 AM
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miniman82 miniman82 is offline
First Light: 1952-2011
 
Join Date: Jun 2009
Location: Great Mills, MD
Posts: 4,183
Update: IT'S ALIIIIIIVE!!!!



Restuffed the last few caps, finished putting the CRT socket on (I'll never do that again), crossed my fingers and flipped the switch....


.......




Nothing, at first.

Figured HV might be down, so I pulled the cover off. I saw the 1B3 filament glowing dimly, so I knew the oscilator was running. Tried moving around the feedback spring to different positions, but still nothing. Then I tried the brightness control- Bingo! It was just down too far, now I had a scrambled line on the screen.

Vertical was not working at first, which was caused by dirty 12SN7 pins. Cleaned out the socket, and I now had a full raster. Then horizontal wouldn't lock worth a crap, and I discovered a capacitor on the hold control was the wrong value. Put the right one in, and the oscilator started running at the correct frequency. Now I have a decent picture and clear sound on channel 3, coming from the cable box. Can't believe this thing didn't have any dead tubes...even the 7JP4 has pretty good brightness.

Next I need to do the retrace blanking mod to get rid of the lines, and next weekend it's looking like I'm headed to Beloit, so I'll bring the cabinet with me to start the woodwork. All in all, this is turning out to be a fun and cheap TV to get going. Not only that, I think it'll have a superb picture when I'm done with it. I think I'll be putting in a cooling fan though, this chassis puts out a fair amount of heat.

Enjoy the pics!
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Evolution...

Last edited by miniman82; 04-15-2012 at 03:07 PM.
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