I got a freezer defrost timer that is see through on one side. It looks like the resistor inside the timer is dangling and no longer connected. But the fridge/freezer is still going.

Can this cause a risk or is there a main fuse in a fridge to prevent electrocution?

I would have thought the timer resistor is in relay to earth to get a circuit. So maybe it is still touching. Whatever is happening it is running.

My biggest concern was the lack of circuit in a defrost timer causing a fire.

I just want to feel a bit confident.

I tested the thermostat first and got 0 omhs even though it does look like the top is lifting.

So I thought it might be the defrost timer. When I looked at that I could see the resistor looking like its not in relay. Being very non educated in electrics I just freaked out a bit with worry about safety.