I am new to this forum so please bear with me. One of my three juke boxes is a Rockola 940 that has always worked well, but it hasn't been played in a while. After start up, I noticed that everything worked but the turntable was spinning 34 rpms like for playing an LP. The voltage to the turntable motor is 120 volts and I don't see any binding of the drive wheel or platter. I did notice that the power distribution box has four monitor lamps. The second lamp, labeled -28v, has a very faint glow, unlike the other three which are bright. Any help would be greatly appreciated and thanks for the opportunity to post my problem.