I just got a real deal on a 2488 at a sale but have no idea if it works properly or not. I may want to keep it but also may want to pass it onto the next person and make a nice little profit. It's been forever since I messed around with recording gear and even then I barely got my feet wet. Are there any self tests this board has to verify it's functionality? What are some very basic things I can do and check to make sure at least the basic functions and features are working? I have a mic with XLR and also a keyboard I can use. Not looking to explore MIDI use.