Recent content by SteveC

Eureka! Turns out it was a poor solder joint on the BS170 right above the big MOSFET. While probing more voltages, I got lucky and it triggered the fan when I applied pressure to the joint. Thanks Bryan and Ralph for the help! Now to get smoking...

1N5819 is installed with the silver band towards the edge of the PCB (same as the silkscreen). With the positive probe on the ground side, the diode registers 139ohms while in the other way it is ~44k. The MOSFET middle pin is registering 1.13V and both outer pins are 12V. The inductor has...

I just put together my heatermeter last week and everything is functional except the fan. The output voltage I get is stuck at 0.75-0.77V whether fan output is 0-100% or inverted. Servo is working fine. When I checked voltages against the diagram under hardware, the 12V and 5V are all...