You can tell how old they are by the serial number on any frigidaire product by the first 3 numbers. the first is the year, the 2nd two are the week.
If you can hear the pump running, there could be something stuck in the nipple under the sink. Take off the drain hose, and stick something like a pencil in there to try and clear it out. If you cant hear the pump, either the drain pump is dead, or theres something jammed in it. | 
Gibson dishwasher does not drain 
