Seeburg "black box" question

hatrick

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If a "black box" does not have a price program card in it, does it function as free play?

I have 4 black boxes, none of wich have a pricing card in them. I would prefer my juke to be freeplay, so if one is not needed, that would be a bonus.
 
Yes, that is the way it works. No pricing card installed = free play.

Never insert/remove the pricing card while the machine is powered up.
 
Thanks for the quick response guys.
Now to figure out why fuse 3102 (.8 amp) on the DCC power supply board keeps blowing. These things are fun. :D
 
This is for a USC-2?

I just completed a fight with mine, so many different issues, but all so minor. Wouldnt select just a few selections, like 200 - 204, but 104 etc worked. Ended up being the switches that hit the contacts on the TMU. Some selection bulbs wouldnt light, needed the switches adjusted that hit the contacts for that. Some selections would produce a corresponding #9 selection, so 143 would play 143, then 149. Ended up being the grey box. Initially selections wouldnt happen at all, ended up being a bad snap switch on the DES. Bulb ballasts were bad, replaced both. Replaced black box for shit, since it was cheap.

This one didnt really give me a headache, but if you dont know what youre doing its gonna cost you, like anything else.

Ive seen most of the issues that can happen, but blowing a fuse doesnt seem like a good thing.

get involved here: http://webreports.netlojix.com/pipermail/jukebox-list/

A few of the regulars there have written books on fixing these digital Seeburgs. When it comes to real technical things, these guys can get you fixed up faster than this forum. I also suggest buying all the required manuals for these machines. The USC-2 manual is shit, its just an appendage to the USC-1 manual which is about 5x thicker, and much more complete. There is also a troubleshooting guide for DEC model jukes. i have this also, ill see if there is an explanation for the blown fuse.
 
Thanks for the quick response guys.
Now to figure out why fuse 3102 (.8 amp) on the DCC power supply board keeps blowing. These things are fun. :D


You have a shorted zener diode in either the black box or gray box. In the Black Box check diode CR3744 (1N5257A zener diode, 33 volt). In the Gray Box check diode CR3228 (1N5257A zener diode, 33 volt).


Buy a copy of the late Tony Miller's "Seeburg's Black and Gray Boxes" repair book. The latest version (which replaces the 1996 version) shows every possible pricing card setup ever made and adds additional service information.

http://home.pacbell.net/fmillera/

Victory Glass and Always Jukin' usually stock his books.
 
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This is for a USC-2?

Funny you ask that, I have a trashed USC-2, but this question is related to a STD4 (Mardi Gras) that I just picked up.

Thanks for all of the tips and suggestions, they will be helpful as I tear into this one.
 
You have a shorted zener diode in either the black box or gray box. In the Black Box check diode CR3744 (1N5257A zener diode, 33 volt). In the Gray Box check diode CR3228 (1N5257A zener diode, 33 volt).


Buy a copy of the late Tony Miller's "Seeburg's Black and Gray Boxes" repair book. The latest version (which replaces the 1996 version) shows every possible pricing card setup ever made and adds additional service information.

http://home.pacbell.net/fmillera/

Victory Glass and Always Jukin' usually stock his books.

Thanks Ken! Once again you have provided some great info. I plan to pick up Tony's book real soon. It's a shame I got into the Seeburg jukeboxes after the guru passed away. I've read through his website and he really was a incredible source of knowledge.
 
People are still leaving messages for help with Seeburg jukeboxes for Tony Miller on his guestbook page. I guess they don't know he died suddenly back in April this year.

His webpage is running on autopilot I guess. People should save as much as they can from his site before it disappears. It is indeed an incredible amount of Seeburg tech info.
 
Ok, I checked the diode in the gray box and it was good. Swapped out the black box since I have a spare, and the fuse no longer blows.

However, I'm only getting around -16v where I should be getting -27v.
Any suggestions where to look for that one while I wait for my books to arrive?

Thanks again for the help. It's greatly appreciated.
 
It appears the 750 ohm resistor on the DC power supply board on the DCC was out to lunch. Now I just need to locate a precision resistor to replace it and see if that fixes the voltage issue.
 
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