thanks for your comment. I can't give you advice regarding the VPC-1 or Kawai NV. I do piano repairs entirely for my social project "Keyboards for kids" so I usually get quite old instruments, except for chinese ones because they don't age well. Regarding sensors, anything that might collect dust is bad, anything encapsuled well is good.
Regarding the Fatar keybed, yes it's annoying, but chances are good to revive a keybed once properly cleaned. There are usually two contacts to calculate the velocity, which is lost once only one of them is dirty. Use isopropylalcohol or benzine that evaporates traceless to clean the rubber contacts. This works usually very well. And keep an eye on the internal memory backup battery, since I know of leaking batteries in other GEM pianos leading to complete failure. If it's not a standard CR2032 battery (don't know the Promega) it's likely to be a rechargeable one that you should replace after some 10-15 years latest.
Hi Marc,
thanks for your comment. I can't give you advice regarding the VPC-1 or Kawai NV. I do piano repairs entirely for my social project "Keyboards for kids" so I usually get quite old instruments, except for chinese ones because they don't age well. Regarding sensors, anything that might collect dust is bad, anything encapsuled well is good.
Regarding the Fatar keybed, yes it's annoying, but chances are good to revive a keybed once properly cleaned. There are usually two contacts to calculate the velocity, which is lost once only one of them is dirty. Use isopropylalcohol or benzine that evaporates traceless to clean the rubber contacts. This works usually very well. And keep an eye on the internal memory backup battery, since I know of leaking batteries in other GEM pianos leading to complete failure. If it's not a standard CR2032 battery (don't know the Promega) it's likely to be a rechargeable one that you should replace after some 10-15 years latest.
Good luck/
Ulf