During my project, the flash is bigger than 31%.but i find it can be work at flash 23%. however ,if it is bigger than 23%, the 2560 can not work.So i need help.Thank you. I am not good at English .Sorry. 
During my project, the flash is bigger than 31%.but i find it can be work at flash 23%. however ,if it is bigger than 23%, the 2560 can not work.So i need help.Thank you. I am not good at English .Sorry.