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Vintage Simmons Drums (UK) Users Group

Index last updated: 2026-04-13 23:32 UTC

Message

sds 9 fault

2009-11-27 by and.1234

hi all done some investigating on this fault now ic 20 is in a dil socket removing the ic the snare trigger acts in the same way as the fault on the rim trigger the ic is a lm13600n a dual op transconductance amp will a lm13700n do in its place the bias current looks to be the same any more help please.

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