The EE shop found no gross problems with the staging building satellite box (see aLOG #1845), which was showing a noise spike at 55Hz on channel 1 and generally elevated noise levels on channel 3. Dave did find a couple of questionable solder joints, so he gave the box a going over and re-soldered connections as necessary. This removed all noise issues with this satellite box. A second satellite box was also showing some noise around 55Hz on channel 2. Dave in the EE shop re-soldered the connections in this satellite box, which also removed the noise. Both boxes are back in the test stand and functioning normally