The simple and IMO "obvious" solution to this problem is for Yamaha to build the power supply into the keyboard, and use a power chord like what you find on something like a Motif XS, or other pro workstations.

People so often complain about "weight".., ask yourself what's more important.., a good solid built in power supply that would only add a few pounds to the keyboard, or an external supply and flimsy connection ports that are more prone to breaking-thus resulting in you replacing your power supply or connection point?

One of the reasons the power supply is "external" is because there has been such a big issue about weight regarding arrangers over the years. To me it just seems more logical to put the power supply back into the keyboard with a good power chord connection. Yamaha knows you guys use the PSR-3000 for professional work. If you start asking them to put the power supply back into the keyboard, they just might do it. Just my two cents.

Squeak