Just a Quicky

When the 5pw clocks power up does the rev counter remain stationary or does it do a test to max and back to 0?

I only ask as i got some 5pw clocks with the screen over the rev counter broken and they wernt sure if the counter worked or not (I have stuck a meter accross some of the contacts and cant see any reason why they shouldnt). The rest of the clocks seem to be fine they flash away and show a host of error codes

Mine do a test up to max then return to zero.

thought as much must be somthing wrong with the motor

thanks