On Dec 19, 3:42 pm, Richard J Kinch wrote:
writes:
I have searched the
WWW, but no mention of the specs of the power adapter. Can anyone help
here?

These were typically 5VDC with + in the center. If you don't have a
variable power supply to experiment with, you might get one of the switch-
configurable ones from Radio Shack and step it up until it works.

Thanks, Richard. I will try that when I get to the plant tomorrow.

Paul