I have a ten year old sundance spa. i was pushing the jet control buttons while the tub was running and the display went blank and the tub stopped working. i've checked the breaker inside and the gfi, no problems. any troubleshooting suggestions would be appreciated. thank you.

Check all the fuses on and off the PCB by removing them and then checking for continuity, you may simply blown one of them.

thank you top tech. i'll try that..
charlie