Dominick A
TVWBB Fan
I have a TC HM board with a switch with the RDTC box. So I am crystal clear on the switch wiring, can someone please confirm these steps as I work from top to bottom on the image above:
1) Wire ground from the 12V jack to pin 8 of the Cat5 jack
2) Wire pin 1 of the Cat5 jack to the offset pin of the food probe adjacent to the TC probe
3) Wire pin 2 of the Cat5 jack to the offset pin of the middle food probe
4) Wire pin 7 of the Cat5 jack to the top leg of the black side of the switch
5) Wire the middle leg of the switch to the resistor side of the 100K resistor behind the TC jack
6) Wire the bottom leg of the switch the wire side of the 100K resistor behind the TC jack
Assuming this is correct, does it make a difference which side of the switch I wire to? I just want to make sure as I look at the orientation of the switch in relation to the pins I need to wire from as I do a test fit in the case to see what the easiest route is to wire this up.
I finally wired everything up as I planned in the previous thread quoted above. After plugging in the wall wart, the pit probes are either showing "No Pit Probe" both when a TC probe is plugged in and when it is not, or, it is showing a temperature that is steadily going up, sometimes starting at 300, 400, or even room temperature, but continues moving, never settles. This is the same even when I toggle the switch, or remove and then re-insert the TC probe.
Initially, when I had the HM/Pi seated firmly in the case, my Probe 2 was showing a steady 44F. When I plugged a probe in, it would show the proper temp. Probes 1 and 3 were fine. I later realized that the compression of the wire connected to probe 2 while seated in the case was the cause. It seemed that the wire was pushing into some of the pointed solder joints on the board while compressed. While this problem went away when unseating from the case, the wild pit probe readings, regardless of the toggling of the switch, remained.
One other possible issue I noticed happened while soldering the middle leg of the switch. While heating the middle leg of the switch to solder, I must have overheated it as it rose up out of the plastic housing it is connected to. I tried pushing it back in and got it nearly back to its origin. I'm wondering if I broke the switch since the fluctuations and readings (or non-readings) are happening on both sides of the swtich??
What else can I do to troubleshoot this?
Would anyone wire this up differently to avoid possibly puncturing the wires while seating in the case? Given my current wiring, I also can't fully seat the HM in the case. The Cat5 jack sits up about an 1/8 of an inch or so.
Switch connections - https://drive.google.com/file/d/0BzSBmZGY0VqYdVAwWmpFTDdGWUk/view?usp=sharing
Wire runs - https://drive.google.com/file/d/0BzSBmZGY0VqYREZScjNvVjFzUlU/view?usp=sharing
Connections Close up - https://drive.google.com/file/d/0BzSBmZGY0VqYQzBYNkE5QUlRbkE/view?usp=sharing
Not fully seated - https://drive.google.com/file/d/0BzSBmZGY0VqYWS10bnE2cWlXQUE/view?usp=sharing