KM 030 repairs?

My Kenwood mixer with timer KM030 has stopped working just after the guarantee expired, apparently the PCB board needs to be changed. It will cost $300 in the Kenwood repair centre and they will guarantee it for a further one month only. I thought it is not worth it because these things tend to keep breaking down. ANy ideas about self repair? I was wondering if I could just remove the timer and get the on/off switch connected to the speed dial.