Circuit Overview:
ROM workstation synths with 61 and 76 keys respectively. Great sounding machines using common cards for JV1080 etc.
Service Tips:
Not aware of any issues on these, save that if outputs fail someone may have hot railed the jacks in which case you'll find a burned smt coil between jacks sometimes I believe. Your output will just buzz because the coil opens and no more ground :-)
Parts:
Roland may still have some parts for these. And also there are some discrete components that I usually stock.
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