Try a new set of quality NiMH rechargable batteries. (Charge them first, of course)
It does sound like a flat battery issue from the description given. :unsure:
Yeah But it could be. Mine was battery problem.
to make sure of that, try using power cable first, if it works, then try again with new alkaline battery, if it works too, then it must be your rechargeable batt is weak, go buy a new one.