Yamaha DTXpress/DTXplorer/DTXtreme

--- In DTXpress@yahoogroups.com, "tunedude10" <toddbob@...> wrote:
> Keith, thanks for the reply. I would be interested in ANY info you 
> have on troubleshooting these cymbals and/or pads. An update, I got 
> my cymbal working temporarily by cleaning the contacts at the ribbon 
> that connects to the circuit board. It only lasted 2 days though. 
> Otherwise it worked well. I seem to be having a similar problem with 
> a 3-zone pad (TPY65S). I do not know how those Yamaha 'film switches' 
> work and could really use some theory here.
> Todd

Todd,

I haven't taken all my pads apart becuase I have had any problems,
although there are pictures in the photos section from OGD who has
taken just about everything apart.

If you measure the resistance from the ring of the connector to the
sleeve, you should get a high resistance when neither rim switch (or
rim/bell for the cymbal) is pressed, say >1M ohm.  With one rim switch
pressed you should get a low resistance - mine are around 15 ohms. 
Then with the other pressed instead, you should get 10k ohms.  There
is a 10k resistor in series with one of the rim switches which is used
to distinguish between them.

I don't know which is the most likely area for problems - the FSR
switches, bad soldering joints or the flat foil connectors.

Keith.