Thread: New enthusiast
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Old 02-07-2016, 02:53 PM
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Electronic M Electronic M is offline
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Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
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A monochrome TV is the second (first would be a color TV) most complex consumer market tube era electronic device, and not a good first electronic project for anyone. I'd highly recommend that you find a cheap common AA5 tube radio and make that your first project....It will teach you skills that will provide a foundation and help you on the TV.

As for the TV.
You will need to buy a CRT tester, or borrow one from someone local who has one. You can't accurately test the quality of a CRT any other way.

Google "Sam's Photofact" that should bring up their site where you can search the chassis and or model numbers, that search if it yields results should give you a Sam's number. You could buy the schematic from them, but it is usually much cheaper elsewhere.

Bare minimum you need a DMM(or VOM), soldering iron, schematic for your project, and to have the tubes other than the CRT tested (again buy or borrow a tester). Tools that are nice to have, but non-essential for TV work include B&K 1076/1077 analyzer, oscilloscope, variac, test CRT/CRT test jig, and a few other things.

Remember on tube equipment made before 1960 the primary failure mode is electrolytic and tubular paper capacitors, tubes and resistors occasionally are bad too, but they don't fail in mass like caps. Post 1960 equipment tends to have better quality capacitors, and often 'shotgun' capacitor replacement consumes more time and money then diagnosing the problems and replacing the 1-4 parts per problem.

Google "Phill's Old Radios" he has some good information on capacitor replacement on his site.
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