Lerdge bed heater mosfet module
5/5
2 of 3 units purchased worked perfectly on installation. 2nd Lerdge mosfet module failed with very dim LEDs. On replacing defective unit, inspection and testing revealed 120v terminal solder joints had failed when the terminal component’s base pins were not fully pushed into PC board for full base contact during soldering. Lerdge chose to surface-grind back side of PC boards evidenced by uniformly level and sharp edged soldered lead pins. Since the power terminal base was not solidly mounted, the grinding vibration probably caused the soldered lead pins’ joint to crack and fail, which should have been detected by Ledges QC prior to packaging and shipping!
Resoldering all component leads on the #2 + #3 Mosfet boards restored full function to failed init and ensured all sub components were properly seated!
Otherwise, these power Mosfets are good, inexpensive and recommended!