PANEL DIMS OR SHOWS ONLY ZEROS
If your panel uses batteries, replace the batteries with a fresh one or
set. If new batteries does correct the problem or your panel does not
use batteries check the speed sensor and the wiring.
Many times, we have found that if the batteries aren’t the problem, a
wire has simply pulled loose so inspect all the wiring from the panel to
the speed sensor first. If all of your wiring is intact, check the
following areas:
1) If your treadmill uses a magnetic pickup on the front roller pulley
or the flywheel, make sure there is a magnet still in place first.
It is rare, but we have gone on a few service calls where the
magnet is missing. If it is OK, check the gap between the sensor
and the magnet. There should be about 1/8” of a gap on most
treadmills. You can always test to see if the sensor is good by
passing a kitchen magnet in front of the sensor repeatedly. If
you get a speed reading the sensor is good, otherwise replace
the sensor if the magnet is good, the wiring is in place, and the
gap is good.
2) If your treadmill uses an optic pickup which you will typically find
somewhere on the motor shaft, although we have seen several
with an optic sensor on the front roller, make sure the disk that
passes inside the sensor or the strobe disk is clean and aligned
properly. If not you can clean with rubbing alcohol. Also clean
the lens of the optic pickup. If you still don’t get a speed
reading, check the wiring and if it is good, replace the sensor.
If you have questions, email us at doc@treadmilldoctor.com
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