Inbuilt bosch HME 9700gb/01, 6 years old, no power, 13 amp fuse ok. Noticed micro was slow to cook in the morning, evening, oven was on and then it went dead. Closer inspection of unit revealed burnt wiring (about 4 wires ) connected to the :zap: h/v capacitor :zap: . Is this an economical repair / known fault on this unit ?