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#1
10-02-2010, 08:41 PM
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Found a Sparton 21S214!
Wasn't even on the hunt, it found me as I drove through Rockton, IL with my Dad. Has a 21EP4B CRT, plenty of life left. Only issue was a shorted 'lytic in the power supply that fried the 5U4, and some cracked bumblebees in the sync seperator circuit. Replaced the can cap with an NOS one, and put a new rectifier in it. I didn't put more than 2 hours work into this thing, the rest of the tubes were good. I don't know what I'll do with it, I have no room left!
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Evolution... 
Last edited by miniman82; 09-22-2011 at 07:27 PM. 
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#3
10-02-2010, 11:17 PM
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Contrast is a bit lacking, but the control is dirty anyway. Every time I adjust it, it almost loses sync. I think next time I'm up this way, I'll spritz every pot with some Deoxit to see if it makes any improvement. The power switch is bad too. I think this thing spent some hard time in someone's basement, because most of it has got light corrosion, though nothing that doesn't seem to just wipe off. I think I'll be able to repair the power switch, probably just needs a good going through.
My brother suggested it needs horizontal blanking too, so off to the man cave I go to work out a circuit....
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Evolution...
Last edited by miniman82; 10-02-2010 at 11:18 PM. Reason: spelling...
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