The company had a deadline of Jan. 15 to come up with $100 million in combined cash and available credit, or its major creditors can pull the plug on the long-term financing it needs to survive. RadioShack only had $63 million available heading into the Christmas shopping season. The struggling electronics retailer has been trying to close 1,100 of its 5,000 stores since March, but it's an expensive undertaking. It only came up with enough cash to close 175 stores through the end of October.