Carefully plug the unit in with the chassis open (exercise extreme caution). Measure the secondary windings of the transformer. You should read roughly 24V AC for the iron circuit and ~10V to 12V AC for the logic board supply. Fault 2: Hot Air Gun Blows Air but Does Not Heat Up
Following proper usage protocols can significantly extend the life of your Gordak 952: Gordak 952 Service Manual
The is driven by a Princeton PT6312 VFD controller , which the MCU communicates with via a 3-wire serial interface. This interface would be clearly documented in the schematic, showing the connections between the MCU's GPIO pins and the PT6312. Carefully plug the unit in with the chassis