I'm having trouble with my aquatrol. Its about 3 yrs old and has been working fine all summer til now. While I was on vacation something happened and now when I have the timer on, the display goes balnk, pump will not turn on, and the only light is a flashing inspect cell light. If I turn the switch for the timer back off the display comes back on and just the power light is on which is the usual. I have taken and added chroline and plugged my pump straight In until I figure it out. I replaced the current limiter and no change. I found somewhere on checking the control box and found that the 4 wires coming out of the transformer have the right ohm load. The two yellow wires coming out do not read anything which the site said replace board. Is that my only solution. The fuse is also good. Please help.