Oster Microwave Model GOB 61101 run but doesn't heat ?

Are you sure that Model Number is correct? There are 73 Oster Microwave Manuals here, but none of that model number designation. When in doubt 'Read the Manual'.

The kilograms settings are for meats and cakes and large objects. All microwaves have a seconds and minutes setting. Most also have presets for certain things like Pizza and Popcorn.

https://www.manualslib.com/brand/oster/microwave-oven.html

This is the search query for your model

https://www.google.com/search?q=Oster+OGGW3803+manual

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I would would replace it, based on price it would no be cost effective
to replace it.

magnatron may be messed up

There are three things to consider, the magnetron "heats food" high voltage diode "sometimes cracks" and the high voltage capacitor "sometimes shorts" one or more can cause the symptom of no heat. I recommend a professional to assess.

It sounds like the thermal fuse may be defective, or the fan is not running, or the magnetron is getting to hot. If there are any heat issues the thermal fuse will cut power and reset in 5 minutes.

Check the door safety interlock switches for proper operation. #1 trouble with microwaves that operate in all respects but no heat.

Thanks for your question @ FixYa.com

HI..there is a heating filament of an oven MAGNETRON..it s responsible of producing heat to the oven..possibly this is defective ..this filament must be replaced by a new one..theres no problem with the motor cos it runs the table power and light button seems working..HOPE THIS HELPS

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101