FIXED 790.48803100 F84 Code - Light does not come on in microwave

[Loinest76]

Model Number

790.48803100

Brand

Sears Kenmore

Age

1-5 years

F84 code microwave oven not working, Light does not come on in microwave I checked all fuses in microwave all good door switches all good also and I checked low voltage transformer also checks good not sure what electronic control is bad there is a main relay board a display board and the microwave electronic boars

 

[rickgburton]

Check for 120 VAC across J1-1 and J1-2 on the relay board. I'll check for the wiring diagram. If you have yours can you post a copy?

 

[Loinest76]

I don't have mine with me

 

[rickgburton]

Do you have the 120 VAC at the microwave board or the relay board?

 

[Loinest76]

Do you have the 120 VAC at the microwave board or the relay board?

I’m not with the Product Right now

 

[rickgburton]

OK

 

[Loinest76]

Do you think it’s a problem with the microwave oven board or the relay board I check the low-voltage transformer that plugs into the microwave board and it ohms out good

 

[rickgburton]

Do you have the 120 VAC at the microwave board or the relay board?

 

[Loinest76]

I found a blown Buss 20 amp external fuse have it on order not sure what caused it to blow

 

[Jake]

Rick is under the weather, hopefully he will be back soon.

Let us know how it goes after you replace that fuse.

Jake

 

[rickgburton]

Is that a house fuse?

 

[Loinest76]

This fuse Is part of the microwave oven combo the problem was a blown fuse and a bad door interlock door switch