Soundmaster Disco Beat - help needed

[gluedtogether]

Does anyone have any pics of inside of a soundmaster disco beat pedal. I have one that I am working on, but am missing a couple wires. Thanks

[Dan N]

Post good photos of yours and we might be able to figure what goes where.

[gluedtogether]

I have not been able to find much info on this pedal. I heard a sound sample and decided to give it a shot.

I just took a bunch of pics, but I am not sure how to add pics to this. I can email them

[zyxwyvu]

To post pictures:

• upload your pictures to somewhere like imageshack (http://imageshack.us/)
• insert the url imageshack gives you into an image tag when you post a reply (there's a button on the left side of the little toolbar above the text box, next to the hyperlink one)

[Dan N]

Is it like this one?

http://filters.muziq.be/model/soundmaster/rhythm1

I've never been inside one. I believe inside is a rhythm chip like a MM5871 (6 beats), a clock (MM5837?), some simple filters for the drum sounds, and an output amp.

If you knew what was what, you should be able to figure out the wires. I guess knowing the rhythm IC and it's pinout would be the most important thing.

If you want to try, you can email the photos to me at ickystay at gmail.com and I can upload them to photobucket. A good shot of the top and bottom of the board should be enough.

I have a soundmaster SR-88 and ST-305, both old school analog units.

[choklitlove]

Does anyone have any pics of inside of a soundmaster disco beat pedal. I have one that I am working on, but am missing a couple wires. Thanks

did you get yours on ebay not too long ago?  i was bidding on one and lost...  they look really cool.  i hope we can help you fix it.

[gluedtogether]

Thanks for the link to image shack. I posted the pics that I had. There is no IC on the board. It appears to be a small crack on the one corner of the board and then a crack off the piece that held the switch. It was also missing the power jack and output. The was an additional hole at the botton of the pedal, but is didn't look to be original. The purple and orange wire run the the LED.

http://img108.imageshack.us/slideshow/player.php?id=img108/4315/1167576504wbb.smil

I did just get the pedal off ebay...

This is the link that I heard the sound sample
http://www.matrixsynth.com/blog/media/soundmaster/Soundmaster%20discobeat%20film.mpg

[Dan N]

Boy, I sure had that one figured wrong. That's really a nifty little device!

The photos appear as a small flash movie. I can't tell anything from them.

The output will probably be (backwards from jack) volume pot-cap-transistor  collector. See if any rogue wires do that.

You could also expand your schematic/photo search to the identical units found on the discofreque site.

The only thing I have even close to that is a 3 beat Panasonic box that was made to plug into a boombox. Beats for breakdancing? Here's a schematic. Yous may have very similar clock and drum voices.

http://users.rio.com/senorris/junk/rd-9844s.gif

[DiscoFreq]

They wrote it wrong (mastersound discobeat instead of Sound Master Disco Beat), but here are some videos starring this drum machine:
http://www.youtube.com/results?search_query=mastersound+discobeat&search=Search

[gluedtogether]

Those were some pretty interesting sounds samples, thanks for the info and link

I will try and fool around with it this weekend and post some additional pics. I think this is an exact clone and will also search for info on this.
http://filters.muziq.be/model/univox/mr8

It may be easier to find schematic info on univox

[DiscoFreq]

I bought a Sound Master Rhythm1 on eBay the day after I saw this thread:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130062077906

It was listed between the tuners, that's probably why it went cheap

I hope the beats are a bit like those on the Disco Beat

[gluedtogether]

That's great. I wish I had seen one that worked.

Any chance you can take some pictures on the inside and post. I am hoping that they are very similar and I can figure out where I need to reconnect missing wires. Thanks

[DiscoFreq]

Of course, but it can take a while before it arrives

[Mark Hammer]

I'm wondering why on earth you want to restore it.  Unless you paid some ridiculous price for it, that thing is a virtual storehouse of greenie caps, transistors, and useful semiconductors.  Nice case too.

[gluedtogether]

I purchased the pedal not realizing the board was chipped. I have been looking for an analog drum pedal for a while. I figured, why not give it a shot. I am hoping I can just replace the jack, power jack and a few wires and get it working again. We shall sall.

DiscoFreq, thanks ahead of time for posting pics. Whenever it arrives...Thanks