No Background Light. New Battery. M250.

Hi. Sorry in advance for my bad english its not my mother language.

I recently received from my dad’s work place a new M250 player (2 GB),

and there’s no background light.

in “menu” i entered to “settings”, “display” and in “backlight” (something like that i dont have the player now) it says “ALWAYS ON”.

The batteris im using are brand new. they’re “VATRA” & “DURACELL” new batteries (right from the box) with initial 1.5V.

Please, Help me.