The problem is with the timer. It's 60 minutes. So you can not tell if you've set 3.5 minutes or 6 minutes. Difference between toast and burnt bread. Not fixable.
A pity as it's a nice looking small oven. It is not shiny chrome though but silver matte paint. Did not go with our other chrome appliances very well.
Sticking with the old ugly white one with a fifteen minute reliable timer.