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Post by mrpianoman73 on Aug 27, 2023 18:00:25 GMT
Hello. I own a 1965 Seeburg Discotheque PFEAIU. It has worked fine for many years, and still does usually, but it recently has started playing slowly. It goes from playing 2-5 songs at normal speed to it gradually getting slower and slower until the mechanism completely stops turning. Is the motor going out?
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Post by jukeboxmarty on Aug 27, 2023 19:34:18 GMT
The most likely cause for this issue is the large 4.0 mf capacitor in Auto Speed unit.
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Post by armandh on Aug 28, 2023 3:48:08 GMT
+1 that cap is part of the ferro-resonant [regulated] power input section. old caps open up as things get warm. oscillator input power goes down and so does the frequency.
later units [native 45 rpm] used a multi vibrator type osl circuit where R-C values determined the Hz rather than the native 33.3 rpm where regulated input power and a constant load provided stability.
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