i have a leisure bay with a proshield system it was working fine for more than a year now it wont come on at all it has a gfi in it and if i manually push it in you can hear the pump start but it only stays for a second what can i try to trouble shoot this ?

if the pressure switch is leaking will that cause this type of problem?

It's hard to tell.

Is it tripping the GFCI you mentioned in the first post? A leaky pressure switch can easily leak water onto the heater poles, and cause some current leakage leading the GFCI to trip.