Hi all
Thank you for your reply's, that will give me something to go on.
What I did not make very clear is, the fault is not there all the time, when I looked at the piano this afternoon, most of the times that I tried the organ it worked fine, then all of a sudden the fault came and then disappeared, what I did not have time to do was, to see if while the fault was apparent did the piano still work. The 3 I/Cs that have been mentioned are they on the processor board or amplifier board
I have assumed that as when the fault was apparent and the volume control had no affect on the noise, that the fault is on the PSU/Amplifier board, but I also at this stage do not know where the volume control is situated, is it on the processor board or between the processor and amplifier or some where else.
I will be trying now to download SiriusHardware has given and will let you know how I get on
Bill