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I have a Majestic G2000adi gas fireplace. The flame is acting like there is a failing flame sensor. That is, it lights and then goes out in a few minutes or hours. Unfortunately the company was bought in 2008 and the new owners do not support the fireplace with parts. I think that the flame sensor is a direct sense using flame rectification via the hot surface ignitor. There is a bracked just over the HSI that is corroded and worn away. As I understand it an AC current is sent through the HSI and the flame conducts current to ground, maybe through this bracket, verifying the pretense of the flame. I think that the corroded bracket is the ground for this system. Is this correct? There are no other devices or wires anywhere near the burner. I cannot find a source for the bracket. What can I do to fix this? I got this fireplace with HSI in place of a pilot light because of regulations to save gas. So far I have had to buy a generator to allow for emergency heat and now I am facing a $3000 new fireplace if I cannot fix this. Help!