When I lived in Hongkong, my oven failed after less than 10 years. When my landlord came to replace it, he told me that it was common due to the extreme humidity that eventually ruins the circuit boards. I'm still a bit skeptical of that explanation -- but he has probably replaced more "white goods" (refrig, oven, etc.) that I will in a lifetime. Weirdly, my washing machine by Bosch was tough as nails and never had any issues. One would assume that it would be similarly affected by the humidity.