No problem, I will have another go at taking photo's tonight. (flash doesn't work on screen so will set up a small tripod. Thanks again. I can say that I was repeating hitting the same note so this may have influenced the 'no change' in voltage on ic9 pin 1 maybe. In the photo that has the smaller wave the grid is 5v = one line, and on the other larger photo line: 5v = two grid lines. Will repeat photos again with oscilloscope settings etc. Thanks once again for the assistance.
