The number of dead op amps I've seen in ARP synths is pretty high. Especially that LM301 (or the variant ARP used) seems to fail regularly. Coincidentally I currently have a MarkIII Odyssey sitting on my bench; and coincidentally the op amp in the S/H circuit was dead there, too. As far as the failure or non-failure of voltage regulators goes: I've had about three or four devices during the last few weeks that had blown regulators. And of course tantalum caps... -- Malte Rogacki gacki@... ---------------------------------------------------------------------------- "Don't forget to TURN ON THE SYNTHESIZER. Often this is the reason why you get no sound out of it." (ARP 2600 Owner's Manual) ----------------------------------------------------------------------------
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[vintagesynthrepair] Re:arp odyssey mk1 sample and hold problem
2008-05-04 by Malte Rogacki