Intermittant problem on one channel , I have the schematic but it looks as
though it may be a problem with red epoxy/ceramic ? covered surface mount
"network N1" and of course that one or N2 internals, apparently the same, is
not described .

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Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/