View Single Post
  #7   Report Post  
Posted to sci.electronics.repair
gareth magennis gareth magennis is offline
external usenet poster
 
Posts: 323
Default Yamaha P80 electric piano



"N_Cook" wrote in message ...

On 16/04/2014 19:21, Gareth Magennis wrote:


"Gareth Magennis" wrote in message ...



"N_Cook" wrote in message ...

Loss of sustain, owner borrowed another pedal and a problem in the
keyboard. Tomorrow I will clear the decks ,rig up strops and crane to
open up. But if anyone has been there before and can point to what to
look for and so minimum amount of time with the beast in bits then all
to the good, to get all 7 octaves out of the way as soon as possible



People tread on the sustain pedal cable and beak or dry joint the jack
socket.

It's highly unlikely to be anything other than that.





Except I had one of these keyboards in for repair about 6 months ago
where the sustain didn't work, but that was because the whole PCB had
been pushed into the keyboard.
Someone must have given the sustain pedal jack plug a severe whack, or
perhaps upended the keyboard onto the floor without first removing it.


Gareth.


I suppose one-man-bands who regularly repair P80/P100s and the like have
a heavy duty frame for fixing the piano to, to safely take apart without
damage to keyboard or human back. I've only dealt with P100 before and
going by the P80 SM the process seems its possible to do single-handed
without too much of a problem. I'll find out tomorrow.





It is reasonably easy to prop such a heavy keyboard vertically against the
bench, so all that is then necessary is to lift the end sitting on the floor
up to the level of the bench, and site it upon it, with most of the weight
pivoting on the bench.

You have then been able to lift said heavy keyboard onto the bench without
actually having to lift its entire weight.



Goliath.