The original wire ends were 0.15mm probably phosphor-bronze. Only similar to
hand was 0.06mm tungsten wire. To reuse the broken ferrite I had to heat up
to slide off the wire and the glue. Replacement one was an RF bead. This
spring was much closer pitch than the other 2 springs. Replacing and testing
the response at either end, compared to activating each of the other springs
(lightly sliding a toothpick along) was about 1/10 of the response.
Difference a function of the spring characteristic or the wrong metal wires
at the ends or because the this spring is in a different position in the
pickup laminations ? Presumably not due to heating as that was on only one
of them


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Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
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