[werk_ag]

It all checked out ok with a multi-meter (read 3.2K in circuit) and continuity looks ok. Even reheated the solder and added a touch more. One thing I did notice, is that the pan on the underside of the PCB that appears to go nowhere, has no continuity to the topside of the resistor.

You are referring to R7?
Can you please post a close photo of this point?

I've also replaced the TMP36. Still reading in the 70's. Checked the legs of sensor to their respective pins (A7) Vcc, and GND, all looks good too.

So, at the TMP36 pins, we have 5V, GND and connectivity to pin A7. Right?

What a mistery!!!
I will continue to try to reproduce this situation on my system...

I'm still having that problem where upon restarting Cumulus, the RX unit restarts.
The reset pin has 4.6vdc on it with the "jumper" in place.

This is from Playground.arduino.cc, it works!

Disabling AutoReset On Serial Connection

So you have found need for disabling the auto reset? So that the arduino does not reset when establishing a connection. Here are some solutions.

Note: This does NOT apply to the new Arduino Leonardo that uses USB and serial differently. The Leonardo does not auto-reset, however, it is difficult to make Leonardo reset even if desired. See the bottom of this page for Leonardo-specific issues with reset.

The simple way that doesn't require any permanent modifying of your hardware or software configuration changes:

Stick a 120 ohm resistor in the headers between 5v and reset (you can find these on the isp connector too). 120 is hard to find so just combine resistors. Don't go below 110 ohms or above 124 ohms, and don't do this with an isp programmer attached. You can just pull out the resistor when you want auto-reset back.