I have had a Prodigy Hot Springs for at least 17 years and it is likely a 1991-1993 model. Last night it failed to start pump and the heater is also off. I pressed reset and checked breaker box with no success. It is a 110V model. It seems dead. I have heard that these models may have a fuse but can not locate. Power to hot tub is OK.Any suggestions as to where to start to repair?