Seeburg 100A 300 uf cap replacement

Hello,

My name is Larry and I am new to this web site. I found you guys when I was looking up information on a Capacitor through Google. I read the post and the one question , which is basically what I'm looking for, wasn't quite answered. It kind of drifted off on a tangent as topics sometimes do.

I would like to change the 300 uf electrolytic capacitor on my Seeburg 100 A selection receiver before I try it out. I just recently bought a 3W1 wall box. I took the 3W1 apart, cleaned, lubed, and adjusted it, It seems to work now, but before I try it, I want to change out the capacitor. I looked at the schematic and I saw that the positive wire went from a resistor and then to the capacitor. So I'm pretty sure that the single wire is positive because it went to a ressistor. The capacitor is using three terminals. I just want to verify that the other two terminals are negative terminals. I know a lot of the can capacitors, with multiple terminals, are multiple capacitors inside one can. I believe that this is just a capacitor where one terminal being used is positive and the other two are negative. Any feed back would be appreciated.

I believe that if I remove the positive wire from the old capacitor and solder it to the new capacitor, then I can solder the negative side of the new capacitor to any of the two remaining terminals. Will that work?

Thank you,
Larry.

Hi Larry,
You are basically correct-the three outside connections are the negative side--however the cap is isolated from ground. What I usually do when replacing it is to disconnect the wire going to the center post. Follow that wire back to the terminal strip, and disconnect it there. Then connect the new + side of the new cap to that terminal. Depending on the type/size cap used, I trace all other wires to a junction, and use the closest one, or the one that fits best-- Also before using that stepper the "oil filled" 5uf, should be changed and the resistors on the 2050 tube socket should be checked ( as well as the small caps there). I use a 100 ohm !/2 watt resistor rather then the larger wattage 100 ohm resistor that's there--I use this as a "fuse"--this will normally burn out prior to the step-up coil, should the signal line become shorted ! Ron Rich

Well I was able to finish the selector last weekend and I put everything back together, plugged in the wall box, and everything worked great. I was excited to see the wall box and jukebox playing the songs that I picked. Success!!!!

Now I have a Seeburg 200C-1, that I found on Craigslist, to work on.

Hi Larry,
Glad you got it ! On the one from Craig's list--it aninna a "jukebox", so don't look for help here--youz on your own ! Ron Rich