Techno
Signz
.ca
4
Screen Issues
BLACK
SQUARES
APPEAR ON
SCREEN
May be a
module failure.
Usually it’s a loose
connection or a
short in the input/output
connections.
ENTIRE
PORTION
OF SCREEN
GOES OUT
May be a
power failure.
Power supply problem,
may need replacing.
AN
INDIVIDUAL
LED GOES
OUT
May be a
LED failure.
Entire module of LED's
may need replacing.
ENTIRE
SCREEN
GOES
BLANK
When it is not from a
communication issue, it
may be a controller issue.
Controller may
need replacing.
Replace
module.
Check
wires.
Check the light
bulb & tap on
bulb.
Check for
controller
beep when
you send it a
command.
Check if
other
functions
work, like
lights or
actuators.
1
st
2
nd
3
rd
4
th
