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Repair of a 1966 talking book record player for the blind

Here's my old talking book machine that I've had for years; but, here lately, I've noticed the audio quality going down the drain. I replaced three electrolytic capacitors that were in the cathode circuits of both the preamp and output tubes and in the feedback circuit from the speaker. I also replaced three out of tolerance resistors, two in the power supply and one in the cartridge input circuit. These record players were loaned out to blind, legally blind, and physically handicapped individuals, who can't easily read normal printed material, for the purpose of playing slow-speed talking book records provided by the National Library Service for the blind and physically handicapped through the Library of Congress. Before anyone ask, it is legal for me to possess this record player because I'm a user of the talking book service. IMHO, these machines were better than the later model record players. In later years, records were phased out for cassette tapes and tapes have now been phased out for digital cartridges. For the possible exception of an older book that has not yet been converted to a newer format, there are no more records being issued by NLS. Actually, since records are highly obsolete, as are these old machines, I doubt anyone would care who had possession of one. The only time you might get in trouble is if the NLS caught you trying to sell one of their machines on ebay, etc. In the case of cassette players and digital players, they might not want someone who is not a user of talking books to have one of these newer machines because material on those formats is still being circulated and part of the reason NLS can reproduce these books under copyright law is that the books have to be recorded in a format that can't be played on average equipment by the average person and the average person is not allowed to possess such playback equipment (although plenty of such equipment winds up at yard sales and estate sales because the person using it passed away and their survivors didn't know that the equipment was to be returned to NLS; therefore, some of it "leaks" out into the public).

Видео Repair of a 1966 talking book record player for the blind канала radiotvphononut
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5 ноября 2013 г. 4:51:32
00:14:26
Яндекс.Метрика