Samsung Blackjack The phone turned off and will not turn back on or even take a charge

Did it last shut down after draining the entire battery? And are you trying to charge it through a USB connection? The USB charger only charges the phone if it's on (I know, that's stupid, but there you have it). You'll have to use a power inverter and charge it on a wall outlet if the battery is dead. If that's what you're doing, let me know and I'll try to find another solution for you.