No display
SITUATION
CAUSE
ACTION
5.1
TROUBLE SHOOTING
1) No power input
2) Power connection error
3) Display damaged
4) Display board IC error
，
or power input
connection error
，
or two board connection
error
5) Contrast decay
1) Check power supply
2) Check power connection
3) Replace display
4) Check the IC and all the connections
5) Adjust the LCD contrast
1) Display IC reverse install
2) Display IC damaged
1) Check Display IC installation and quality
LED MODULE
on, but no control
from display
Display normal,
but no response
from buttons
1) Buttons damaged
2) Display IC damaged
1 ) R e p l a c e b u t t o n s
2) Replace Display IC
1) Signal Cable error
2) Signal conncetion error
3) The DMX signal receive IC damaged
4) DMX address error
No DMX signal
1) Check all signal Cables
2) Check all signal conncetions
3) Check the DMX signal receive IC
4) Check DMX address
1) The heat sensor resistance of LED board
error
2) The temperature protection circuit on the
display error.
When the surface
temperature of the
unit exceed 75
℃
, the
temperature protection
no work .
1) Replace the heat sensor resistance.
2) Check the temperature protection circuit.
1) Check LEDs joining
2) Check lens installing
1) LED not joining well
2) Lens not installing well
Color mixing
uneven,with splash
1) LED damaged
2) LED damaged or Main PCB
LEDs of the same
color are not lit
1) Replace LEDs
2) Replace damaged LED or Main PCB
1) Replace saving IC
1) Saving IC damaged
Manual and program
can not save
20
5
APPENDIX
1) Check driver current of the partial color
LEDs on the Driver PCB
2) Check LED quality
3) Reset to factory default setting.
1) The current of one of the color group LEDs
is too strong or too weak.
2) LED brightness not enough
Partial color
（
partial red,partial
green, partial blue
or partial white
）
