los angeles 2 treadmill?

bought a new 1 from argos a couple of years ago. only assembled it a few weeks ago. came on when i pressed start. counted down from 3 to 1, then went click and stopped working. fuse was blown in circuit board. replaced it 3 times. same thing kept happening. rang customer services and they wanted me to send circuit board in. accidently damaged it when taking it off, so they wouldnt even look at it cos out of guarntee. want £55 for new one. wud pay it but dont know if it will work. could be faulty motor aswell.