is there somebody who has the manual for the YAMAHA PSR-510? or has an idea where i could find it?

I have it.
I have it because I have a 510.
But I don't know how I could send you. I havent scanner, and it would be hard to type manually the entire manual...I could type for you free a part of the manual. There's a part specially you need?
Emailme
Good 2001 for all

Hi

Go to http://www.yamaha.com/ycaservice/group019/fgrop019.htm
for Yamaha manuals.

Jørgen
Dont forget to visit The Unofficial YAMAHA PSR 740 Home Page at http://home7.inet.tele.dk/js/musik/740pages