How do I repair a nonresponsive capacitive touch screen on a tablet?

This tablet is one of many generics from China and not very expensive, but I’d hate to throw it away so soon after buying it. The seller’s customer service is not helpful in the least and the cost of sending it back is too prohibitive. It’s an Ainol Novo7 Paladin model with a seven inch screen. Should I make the effort to salvage this tablet or turn it into a decorative paperweight?