I wanted to write about a unique problem in a Rockola model “O” jukebox amplifier (from a Rockola 1426 jukebox, vintage 1946). The amp is a very primitive design: class A, 4 tube operation consisting of 5U4 rectifier, push-pull 6L6’s, and 6J5 preamp tube. An interstage transformer drives the P-P 6L6’s instead of a more […]
rare Rockola jukebox amp hum problem Read More »
This article explains stepper repair of a 1950’s Seeburg jukebox. High voltages are present. Repairs should only be attempted by a qualified technician. ©2010, Bob Putnak. This article uses a stepper from a Seeburg C as the repair example, but the 160/200 play steppers found in late 50s and 60s Seeburgs are fundamentally the same
Seeburg jukebox stepper repair Read More »
Converting a Seeburg jukebox for free play operation is a popular modification for home use. It eliminates the need to find coins and eliminates coin gear jams. The “old” way to free play a Seeburg was to bend the little ramp inside the CCU so that selections were not cancelled as the CCU wheel rotates.
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This article explains a more professional method to “free-play” a Rockola Princess Jukebox (model 1493). This theory can be adapted to many other jukeboxes, including other brands such as 1950s Seeburgs. This method will: (1) not require any freeplay button, (2) prevent the Lock Bar Solenoid from energizing until the person begins selecting a song,
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