Posted by Marc Martin on
URL: https://www.es-forum.com/Re-new-laptop-tp1542540p1542603.html

> I ruled out Alt.Current as culprit. Here's why:
> Because battery operated NIR LED massager caused me pain. Also the
> LED on my digicam - ditto.

Can you rule out alternative current just because something
runs on a battery? Laptop computers run on batteries,
yet they contain an inverter which creates AC to run the
flourescent backlight. In fact, I wonder if the inverter
itself is the main problem for ES sufferers...

Marc