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#1
10-13-2007, 10:22 PM
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Setchell Carlson P-63 working!
Hi Everybody,
I had gotten a Setchell Carlson 17 inch P-63 BW TV off of craigslist. It acutally worked after I reformed the electrolytics, the others un recapped. I had it running about 5 to 6 hours every day for two weeks. Worked flawlessly. I know I was chancing it, having something short out. I lucked out. It died peacfully, having its vertical sweep shrink and die. Well I had my SAMS schematic ready and all new electrolytics and orange drops. Man was I in for a real workout. I have had no electrical schooling at all. I was able to rewire the power supply to its correct "true" form and also correct a technicians change in the vertical output section. The previous owner had the set worked on, naturally. The old tech split up the B+ and added in a filter choke in series. He/she also upped the capacity of C1 and C2 filters from 100MFD to 200MFD!! So 400MFD! I took the filter choke out and found out how C1 and C2 hooked up without it. They were replaced with correct 100mfd's each. I replaced the other filters without incident. NOW came another confusing vertical output section. There was a .03 1600V "buffer" cap and resistor in series from the plate of the 6CM6 to a connection on the yoke. That wasn't there on the schematic! Also there was supposed to be a 47K resistor from the plate to the screen. Not there! Just that .03 cap and resistor. I went to radio shack and bought a 47K 1/2 watt resistor. It was great they had the exact value. I went home and took out that buffer cap combo and added in the correct 47K resistor from plate to screen. After finishing replacing every waxed cap I tried the TV with the light bulb in series trick. Worked great except for the vertical section having this WAVY lineratiry issue. I tried a few electrolyitics that connect to the cathode of the vert out to no avail. So I looked back to my wiring. I had miss-connected the 225 Volt B+ to the plate of the vert output tube. It was getting power from the top of C2, a main filter cap. At that point the DC wasn't filtered enough. The 225 B+ point after C2 has another 120MFD and 40MFD cap filtering it. I switched the wires. Bingo. It works wonderfully. Thanks for reading! Matt D. 
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#2
10-13-2007, 10:37 PM
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Very cool,, got any pics?
Dan
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#3
10-13-2007, 11:39 PM
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I'd love to post pictures! I just lowered my cameras resolution to get the picture size to fit.
TV still has very fine "static/fuzz" at best fine tuning. Before recap it was actually a bit better. Funny thing is that there were no paper caps in the tuner or IF amp sections that I had to replace. Just one .1mfd past the video amp. Any ideas besides doing an alignment, which is out of the question. The TV is more than watchable. Enjoy the pics of classic MST3K, on a 1958 TV.
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#4
10-14-2007, 01:22 AM
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Most excellent. The snow could be a tuner and or IF problem. If you have a schematic for this guy check voltages on the IF tubes.
At the very least you could pull the chassis out and check the resistor values in the tuner and IF circuits. However the pic looks pretty damn good from here!
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Jordan
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#7
10-14-2007, 10:51 PM
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How do you find stuff like this on Craigslist? The oldest thing I've seen on the Cleveland CL is a mid 80's RCA XL-100!
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This device isn't a spaceship, it's a time machine. It goes backwards, and forwards... it takes us to a place where we ache to go again.
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#9
10-15-2007, 09:49 PM
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yes.... craigslist never has anything but crap
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