New out of the box wont power on
Hi.. Let me try to help you if I can... I'd like you to check a few things,
1) Open battery cover on handset & make sure that the battery pack is installed correctly, and not upside down. Also make sure the little wires that come from battery pack are plugged into the tiny jacks of the phone (usualy red & black wires) in handset is fully attached & pushed snuggly into the handset... and if No wires, check to ensure the part that does connect the battery to handset is not covered with a plastic film of tape or paper as right from a manufacturer they sometimes do that to preserve length of battery until product is sold to you..
2) Check the bottom of the handset phone, that sit in the cradle of the electric part of the recharger, and make sure there is nothing like plastic or paper covering the connections between the bottom of the handset and the charger. Make sure there is a full on connection for a full charge to the handset. As with some cordelss phones Ive had the red LED light will not come on if there is something blocking a full connection for a charge.. The red LED light on base, only comes on when the electricity is flowing into the handset. The slightest tilt not allowing handset a full charge, wont give it a FULL charge.
3) You say " NEW. Out Of The Box" I hope when you connected the battery pack into the handset, and made sure it was connected right, you then allowed handset to charge at least a FULL 12 -24 hours before trying to use your new cordless phone. as the batteries right out of the box, are rarely already fully charged when any cordless phone is bought and then it does need 12 - 24 hours for a FIRST FULL CHARGE...
If you can check all 3 of these questions, and let me know how things are back on this posting, if you stilll can not solve the problem after a full charge to battery, I may have some other ideas that can help.