Replace all 3 inverter transformers. You will likely find a burnt one. voltahes generated hy all 3 must be identical. Must do all three or it will continue to shut down due to slight difference between new and old transformers. My resistor was across a cap on the ic. I don't recall which lead. It bypasses the over voltage protection timer circuit. Resistor is not a permanent fix and is bad to do if a transformer is bad. It May be a fire hazard. It was across the the error timer cap. Try to find the ic datasheet to locate the error timer pin.

I suggest replacing transformers after testing and finding a bad unit. The resistor was just used because I didn't replace all 3 at once. Replacing 3 is necessary to make a safe repair