If you purchased a 2413S PLM Dual Band you will most likely experience a power supply failure sometime around 2 years of operation.  Some have seen it sooner and some later.  I think I'm on my third unit now and simply decided to understand what the failure mode was on these units.   The failure mode this repair is referring to is exhibited by no communications getting onto the power line and the Green LED is not lit or might be dimly lit.  Sometimes unplugging the unit for a day and plugging