Using a Fluke? If so, OL means OverLoad or unmeasurable infinite resistance, same as an open circuit.
Yes, I'm using a fluke. Sooo what do you think?
Using a Fluke? If so, OL means OverLoad or unmeasurable infinite resistance, same as an open circuit.
Open circuit, blown fuse or overload device. Replace with nearest similar available equivalent.
If you have a can of "Freeze It", just for giggles you could cool it down to see if it starts conducting again.
If it's a varistor, then it should have a nearly infinite resistance until it reaches it's clamping voltage.Using a Fluke? If so, OL means OverLoad or unmeasurable infinite resistance, same as an open circuit.
Just to add to the confusion...
Perhaps the 'SG' prefix stands for 'spark gap'?...
Nobody can answer with certainty if the circuit is not also provided. PC traces (the circuit) must be defined to know what connects to what. The part could be damaged meaning its function cannot be measured. It could be a diode, a thermal fuse, a bidirectional avalanche diode, or many other possible device. Defining a schematic (interconnections) is necessary.Anyway, that's the idea, to replace it, but I have not been able to identify what the component is...
It may be misnamed, but that is what the Chinese are calling a spark-gap device that shunts excess current to a ground point.BTW, there is no such thing as a surge absorber.