AC200P wont take a charge nor will screen light up

Hi,
AC200P is no longer working. A month ago it wouldnt hold a charge if i turned it off at night. In the morning it would register 0% even if it was 40% the night before. So i kept it on.This morning the display screen doesnt light up and it wont take a charge from the solar panels or the adaptor.
Pls advise