PianoDisc driver boards

[atonal@telusplanet.net]

Hi Rob, 

There is power to all three boards, but there was no power to two 
solenoid banks on the bass and midrange board. Turns out that 
two of the 7A pico-fuses for each bank of 6 solenoids were fried. 
Got replacement fuses and had my electronic technician friend 
solder them in for me. Total cost: parts $ 3.58 labour: glass of 
eggnog.

Almost done the install... thanks for your advice.

Rob Kiddell RPT
atonal@telusplanet.net

> If this is not it then it is possible that you have a bad board, but in
> all the systems I have installed or repaired I have never seen one that
> didn't work at all.  Typically when one goes bad a section of 6 notes
> will stop working.  This is because every six notes shares a tiny little
> board mounted fuse.  These are the little green resister looking thingees
> placed after each of the 6 sets of rectifiers going out to the connector
> pins.
> 
> Good luck,
> 
> Rob Goodale, RPT
> Las Vegas, NV
> 
> 
> 
> Rob Kiddell wrote:
> 
> > Greetings,
> >
> > As a follow-up to my earlier PDS-128 Plus inquiry, I appear to have
> > two groups of six solenoids that aren't functioning. I suspect the IC
> > above the solenoid contacts, but I will have to check board solder
> > traces first.
> >
> > Can the IC's be replaced, or is it easier to get a new 90-note driver
> > board?
> >
> > PS: I've mounted the solenoid rail with 3 short at the bass and four
> > in the treble, and attached the solenoids to the boards in that
> > order. With the exception of the non-working solenoids, the system
> > checks out.
> >
> > Thanks to all who have replied,
> >
> > Regards,
> >
> >
> > Rob Kiddell RPT
> > Atonal Piano Service
> > http://www.telusplanet.net/public/atonal/
>