EL wire control

Hi
I am using Arduino UNO with a compatible add on shield to control EL wire, to turn on and off on the programming that I did in Arduino 1.6.4;
Everything goes fine, but randomly some times a quick flicker is not happening, some times two or one channel keep turn on without any instructions according to the arduino programming.
Do I need to use a different version of Arduino, or something required in coding? or my addon shield is not working fine? or any other issue?
Thank you!

How about you give use some more (any) details of the hardware and software that you are using ?

or any other issue?

This one or any of the above. Only YOU can actually see what is happening, which hardware you have, how it is connected, and what software you are using.