Hello igorsk (Master ;-),
by the way all your hacks worked great an my PRS500. here again THANK YOU! You are a great guy!
Yes, I tried both USB ports on my SONY VAIO VGN S5M and both on my SONY VAIO A317M. The same problem.
I figured too, that my Iphone charges through I pod USB cable not from all USB devices.
OKAY and thx, I will look to get a PSP cable.