Seeburg M100C CCU

I have a seeburg m100c that I'm working towards getting fully functional. The coin mechanism has its own issues and for now is set aside. Currently I'm having problems with the CCU. When I manually flip a credit switch, sometimes it engages the solenoid latch on the selector, sometimes it does not. More often I would say it does not. The credit button on top of the CCU does nothing. I purchased a free play adapter that goes inline between the 8pin cable and CCU.
(Small blue plug adapter off eBay). It is supposed to engage the solenoid latch on the selector when one button is pressed but it doesn't do anything. Any thoughts at where I could begin to further diagnose the problem? Does this appear to be one problem or multiple?

On the good side of things, the selectomatic mechanism does appear to play records properly.

Thanks for the help.

Brian

Hi Brian,
Well, you have "opened a can of worms" here--IMHO, the very first thing you should do is throw that "free play plug", you have purchased in the trash ! Seeburg's latch bar solenoid is an intermittent duty unit, only. If left on for over 20 minutes, they get hot, and tend to catch fire ! Once "old" they are more likely to catch fire, sooner,--and that causes a BIG mess !
Once again, IMHO, if you want to set it on "free play" use the electronic one that protects the solenoid, fully--it's well worth the cost difference !
(Yes--I sell them !--PM me if you would like to purchase one).
As for the problem you have--either you are not getting the 25 vac to the solenoid, or, you are not getting the (switched) ground. You will need to look at the schematic, and follow the paths of both--you may just have a plug, in the system that is not making good contact, or it may be a switch within the CCU, or ES (start-hold) that's causing the problem--or, perhaps "someone" has previously, made some attempt to set it on free play, somehow ? Ron Rich

Ron,
Thanks for the reply. I'll continue trying to sort out this issue with the CCU.

- Brian

Hi Brian,

I had similar problems with my CCU when I rebuilt my Seeburg C.

Thanks to advice from this site I solved the problem.

In my case it turned out to be a missing capacitor on the Timing Relay in the CCU.

Also, the cancel coil was very slow to move. Once I disassembled it and cleaned it, and replaced the capacitor, no more problems.

The manual gives clear instructions for all the settings in the CCU (pages 3041 to 3043).

Cheers

Gordo...

Thanks Gordo. I will check through it all soon and compare it against the manual.

So I installed Ron's free play mechanism and now it allows me to make a selection every time. Looks like the other free play was junk, and also confirms that the issue i'm having with the credits is in the CCU. Although I can make a selection everytime (latch solenoid engages and allowed to select A1 for example), a few of the selections dont seem to do anything. It's the same few everytime, so I will begin looking into this. I have Ron's book.

Interestingly, I also replaced the lightbulbs (no 47) under the "select" on the select mechanism. They light up for a few mins and then blow, not sure what's going on there.

Additional question, does anyone know the best source for new replacement needles?

Thanks for all the help.

- Brian

Hi Brian,
Look at the "rotary switch",in the CCU. Set all of the credit switches to the "down position", if not "resetting automatically", when you are using the FPA.
As for it not selecting certain records, this is a function of the Solenoid Assembly Unit (SAU), or Electrical Selector (ES), not related to the CCU.
The lamps burning out makes me wonder how they are wired ? They should be wired in series, and last a very long time ! Ron Rich