Started having trouble with my Omnitouch 5.7 keypads. I have 3 of them. The icons on the touchscreen are flashing and also the touchscreens are beeping randomly. With all 3 touchscreens plugged in the flashing is so severe I have virtually no control. When I unplug 1 of the touchscreens the flashing becomes less severe and I can control some of the functions. With only 1 of the keypads plugged in there is no problem. I did update firmware from 2.3.3 to 3.0.0 and that did not seem to change anything. I have tested voltage on the touchscreen hub and it tested out to 24v, which I think is the correct voltage. Anybody have any idea whats going on.