Looking for some assistance from the community here.
I have a Best BST-863 that has stopped heating. I've read some of the threads on this particular unit and haven't seen anything that aligns with the problem i'm currently having. I'll describe the problem the best I can.
When the unit turns on, the blower kicks on for a second or two as it should. When lifting the handle out of the stand, the blower kicks on, the little thermometer shows the red image to go up and down like its trying to heat up but no heat comes out. The little moon symbol stays lit unless you press the touch screen, then comes back on and the screen dims a second or two later. The reed switch is functioning as it should, tested with stand and with a stand alone magnet. The temp screen stays showing 000*c or 032*f, I applied heat with a hair dryer and this value does go up to 004*c or 040*f with the unit running, handle out of stand.
I've removed the cover, looked everything over, and do not see anything amiss. I've taken a few readings from the unit and was hoping someone could compare them to their working unit. I cannot find these values anywhere i've looked on the web.
With the unit turned on, handle in the cradle, (assuming AC voltage by looking at the board) voltage reads 54.18v on the blue & brown wires on the heater board. When lifting the handle out of the stand, blower kicks on, and the voltage changes to 123.15v. I took the handle apart, removed the wires from the heating element side and tested voltage there as well, it shows roughly 14.5-15v regardless of handle status in stand or out of stand with blower running at the pins. There's an electrical component soldered in line with the blue wire at the handle but I cannot make out the markings to determine what it is (maybe a resistor?). The lack of voltage change is leading me to believe that component on the blue wire may have something to do with my problem.
Heating element seems ok, measuring across the pins show 16.5
I tried to measure resistance across the pins of what I believe the temp sensor to be inside the heating element, 3 pin side, center ground. Value across the two outside pins shows ~1
and fluctuates around 2-3
when heated with the hair dryer.
If anyone here can assist, i'd greatly appreciate it. This unit was functioning properly, had been shipped, and arrived in its current state. I'd love to get it back in working condition.