According to this generic replacement for sale on E-bay at:


http://cgi.ebay.com/ws/eBayISAPI.dll...tegory=38 091

the voltage for the PA-3 appears to be 10VDC @ less than 700mA max current.
I'm sure you can find more info if needed using Google

Bob

"Patt" wrote in message
news:OEXte.66077$El.11067@pd7tw1no...
My yamaha keyboard PSS-680 requires a pa-3 or pa-4 ac adapter. Does anyone
know what the volts and amps would be for that?
Patt