[Jukebox-list] Wurlitzer Amplifer

[Jay Hennigan]

dguarino1 wrote:
> I just picked up a cheap spare "used" Wurlitzer amplifier model 547. I plan to re-cap it and clean it up but before I do , I would like to ask a question about. Someone previously has written "Filter cond." on the cover plate for the circuit board. I'm no electrical wizard, so I'm in the dark on this one. Just wondering if I should be looking for something other than a bad capacitor or obvious wiring problems. I haven't tried this amp in my jukebox.

Capacitors were called "condensers" in the old days.  Remember "Plugs, 
points, condenser" in an engine tune-up?  The note probably indicates 
that the amplifier needs a filter condenser (capacitor), or it could 
mean that one was replaced.

> I also want to replace the power cord using a three wire cord. Any suggestions as to where to connect the ground to. Is this advisable?

I solder it to one of the ground lugs on the chassis.  Leave the green 
wire a couple of inches longer than the others so that if the strain 
relief grommet fails it will break last.

You should also ensure that the amplifier mounting bracket is securely 
electrically connected to the mech and cabinet metal.

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Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
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