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Subject: Re: silicon mallet

From: "p_k_daniels" <pete.daniels@...>
Date: 2008-06-23

--- In Simmons_Drums@yahoogroups.com, "p_k_daniels"
<pete.daniels@...> wrote:
>
> --- In Simmons_Drums@yahoogroups.com, "p_k_daniels"
<pete.daniels@>
> wrote:
> >
> > ok so awaiting the ebay silicon mallet...does anyone have a copy
of
> > its manual they could scan for me? Schematics etc would also be
nice.
> >
> OK so it arrived its not a Silicon Mallet! it something ive not
heard
> of ...its a multi mallet...same thing almost...main differences
are
> its got only 2 not 3 octaves, Its about half the length and all
the
> electronics are built into the synth like case, no seperate box.
> Anyway its exactly what I need as an addon for the kit. Now its
all
> fine except 6 of the 24 pads dont work...ive done some initial
> investigation ...all 99 patches work fine, headphones fine, amp
out
> fine, midi fine. Took it apart , the top boards are 12 pads each
and
> have some sort of trigger proccessing board incorporated, so
swapped
> the 2 complete top sections round and the problem moves with the
> section so I have either a partially duff processor card or some
> knackered triggers. next stage is to swap the trigger processing
> boards between the sections to try and identify if its the circuit
> board or the rubber/wood trigger pads. Will keep you all posted
and
> will get some photos uploaded soon. its going on the backburner
for
> now as Im off to Stonehenge and then Glastonbury festival.
>
Ok did some additional fault finding,and my problem is with the
primitive membrane keypads and I think its a build flaw that maybe
awaiting for all silicon mallets, so id advise if you have one open
it up and check...
the 2 part membrane keypad is 2 pieces of semiflexible circuit board
the top is a silicon/graphit spray that hits a matrix of printed
tracks on the other one when the pads are struck.At one end the
printed track folds around the plywood base and is fixed in place
using a thin plastic strip and some sticky tape. The tape on mine
was yellow and black striped about 2 inch wide. something in the
glue of this tape has eaten the tracks turning them thin and black
and in some cases eaten them away altogether. so i know what the
problem is...still not sure how Im gonna fix it though.