My mac pro backlight keyboard

Dear team,
recently I face poblem with the backlight of keayboard.
the light not shining or lighting strong as before and some time its flashing go and come dont know why?
but If I blug the charge its become full light?
can you help me in this problem?

Wrong forum - this is for Mac Pro tower users who don't have the benefit of an Apple Backlighted Keyboard - I ended up picking up a Moshi Luna keyboard for $100 that does a great job of letting me work in the dark!
As for your Macbook Pro sounds like you need to go to the Apple store and schedule a keyboard replacement.  Zapping PRAM and resetting your energy saving preferences might help, but it sounds like a wiring issue.  Best of luck.

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