Trying to repair a sign I installed a few years ago. The company that produced the sign (Action Media Technologies) has gone out of business. I know that the receiver card is the issue, but I don't know what to do next. Usually I would just send the part back to the manufacturer, but they're out of business or impossible to get a hold of. Any ideas on how I can repair this part? Or where could I get a new one that's compatible? Any input would be helpful. Thanks