not working at all, black screen

Ipod will not turn on, even with a hard reboot (menu and center) after 15 sec hold. Tried charging and even the charger light looks a yellowy green vs red or green fully charged color with full charge. Was working fine one day then the next won't work at all, even plugged into the laptop. Was refurbished about 1-2 years ago with new logic board and battery.