Common Failure Causes in Semiconductor Heater and How to Prevent Them

https://precision-thermal.cavandoragh.org/how-mica-heating-plate-works-and-where-it-fits-in-modern-equipment

Many heating problems look like a power problem at first. In practice, the cause may be contact, heat loss, sensor position, or poor fit. A semiconductor heater works best when these parts are planned together