A quick repair to an Oberheim Prommer this evening. This gadget arrived totally dead, just blinking the bar graph LEDs on power up.

Root cause turned out to be a faulty 16MHz crystal which is the main clock for the instrument. Replacing that brought it back to life! Finally, we swapped out the battery, calibrated 5V and ran all the internal diagnostics. Works great again!

#Oberheim #Prommer #OberheimPrommer #VintageSampler #VintageSamplers

And done! The #Publison DHM 89 B2 is working again and sounding … well, like they sound. All loopy and delay-y and shifty! 🤣

Some dead 4066s, a dead TL084 or two. Marginal power supply. And - weirdest of all - bent legs on two ICs. I cannot explain this other than it left the factory like that, or some other tech did it. Either way, I could entertain the possibility that the pins made intermittent contact with the socket.

#PublisonDHM89B2 #VintageEffects #VintageSampler #VintageSamplers