I just have new LED display…I use this for long time but now when I work on this it gives a black screen after some time ...and when I off the display and start again…it start as per last but again after some time it repeat the same process …(sorry for my english)
I hope you understand…how arduino help me for this problem
thanks in advance

If at any point you want to share any details, please feel free to do so.

yaa sir thanks for post...what type of detail you need can you explain...ya i share everything which you need

Well, so far, you've told us you have an LED display.

Seven segment? Number of digits? Matrix? Size? Colour/mono? Manufacturer? Software?

I can imagine a "black screen" on a LCD display, but on a LED display?

OLED screen blacks are pretty good.