Microwave not heating food

DAnby over the oven microwave wont heat..sounds like it's working but it's not. All other functions like the clock, turn table, exhaust venting etc works fine. 2.5 years old. Any ideas on what I should look for? Where is the fuse located?

K DAnby over the oven microwave wont heat..sounds like it's working but it's not. All other functions like the clock, turn table, exhaust venting etc works fine. 2.5 years old. Any ideas on what I should look for? Where is the fuse located?
K

Hello VEKAT,I have the same unit whirlpool GH5176xps-o and it also won't heat.I have check Magnetron terminal to terminal and have my olm set at x10 and get o ohms.Also checked terminal to body casing in x1k and still get o olms this should be infinite.Or should this be Filament to the chassis.Infinite should that be 0 olms to the right of meter or to the left of meter which would be 220 olms and then oo.I have also checked the volts to the 1100m inverter and it comes up120v.So i am having a feeling it is the inverter. do take care, Harold Hello VEKAT,I have the same unit whirlpool GH5176xps-o and it also won't heat.I have check Magnetron terminal to terminal and have my olm set at x10 and get o ohms.Also checked terminal to body casing in x1k and still get o olms this should be infinite.Or should this be Filament to the chassis.Infinite should that be 0 olms to the right of meter or to the left of meter which would be 220 olms and then oo.I have also checked the volts to the 1100m inverter and it comes up120v.So i am having a feeling it is the inverter. do take care, Harold

To Topi: I don't know if you resolve your problem,but I have the same one.So I took apart my magnetron and had noticed some burn marks on the inside copper coil.I am not sure if I am testing this item right.In my book it says to check in RX1 the filament terminal,does that mean terminal to terminal? and to check in setting RX1k the filament to chassis is that the terminal to the outside frame? Also a note if your magnetron is out it does have a 5 year warrenty.that is in the back of the book.Harold To Topi: I don't know if you resolve your problem,but I have the same one.So I took apart my magnetron and had noticed some burn marks on the inside copper coil.I am not sure if I am testing this item right.In my book it says to check in RX1 the filament terminal,does that mean terminal to terminal? and to check in setting RX1k the filament to chassis is that the terminal to the outside frame? Also a note if your magnetron is out it does have a 5 year warrenty.that is in the back of the book.Harold