Product review (1 stars): ZERO STARS-  Kitchen Aid Combo Oven Nothing but Problems!
As a customer I bought new 8 years ago. I had to replace the microwave door springs 3 times with repairs costs of $150.00 each. The springs broke again, but we just live with it. The springs are to light duty to hold the heavy door so we don't try to repair any more.  Convection heating in the microwave is not engineered well as you can't use it due to food that splatters into the heating element. When you turn it on it smokes something awful.  There is no way to access it to clean it.  There is more... If you turn on the self-cleaning oven, the oven gets to hot and fries the heating sensor and the oven completely fails to work. This has happened twice before we found out what caused it.  Repair cost $300. 00 each time this happened. Now the magnetron heating element has gone out. I estimate $300-$600..00 to repair I am not happy with this brand as it clearly could have been engineered better. As I believe these are simple fixes in the product.  In reading the other reviews it clear there is systematic product defect that needs to be addressed.  Hope this helps others in making good choices. The cost of a combo unit an the longevity in use you want a brand of quality. Just wish I had this info when we purchased.