I have seen that mod but I don’t think it solves all of the issues of having the laptop plugged in. The THC can still get interference if the computer is sharing the same ground as the control box. Since outlets in most buildings are all grounded to the same ground in the main panel the only way to avoid this is to use a two prong non grounded plug or a ground adapter.
I purchased my table a year ago and it came with that modification already completed.
See below post from Langmuir 3 days ago.
3d
Hey Neil,
We’re familiar with an issue that affects THC while the laptop’s charger is plugged in. The grounding circuit is pushing a small amount of voltage through your computer’s USB port, which is adding errant voltage to the THC module. You can try the following:
- Only use FireControl while your laptop computer is disconnected from its charging cable
- Replace your grounded 3-prong laptop charger with an ungrounded 2-prong laptop charger
- Use a USB isolator between the USB cable and USB port
The forum is an excellent resource full of helpful and knowledgeable people, but feel free to reach out to us at support@langmuirsystems.com as well for additional support!