Update on my initial request. I was contacted by GQ support staff and they helped me with the diagnosis and provided me with schematic and replacement parts. Thanks to ZLM. You were right, one of the triac was shorted, BTA08, It was relatively easy to access the board and install the new triac. I also checked the handle and there was some plastic melting inside but the element was still working, 30 Ohm for 120 V. I cleaned up some of the melted plastic so the air flow would be good. Although I received parts to replaced the handle I kept it as is as it is working. I would have to destroy the handle to change the inner parts. Thank you all for your help and assistance, especially the GQ support stall. Great job at helping me. Great unit to work with.