Synteknik

Analog Music Electronics

Boss DR-55 Project

My Boss DR-55 is refusing to program. This project started as part of a news update- Click here.. Basically, I’m having to replace the 4011 chip.. to start with..

Maybe this will help : Boss DR-55 Service Manual 

I have opened a thread about this on the Music Electronics Forum: http://music-electronics-forum.com/t45560/#post472977

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Boss  Dr rhythm DR 55
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1979 Boss DR-55 Dr Rhythm Vintage Drum Machine w/Box
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1979 Boss DR-55 Dr Rhythm Vintage Drum Machine w/Box
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