[Elecraft] No Communication with USB Port on KPA-1500

[charles at k5ua.com]

Must have had a power surge because I can no longer communicate with my 
KPA-1500 on the same virtual com port like I did for about 6 weeks.  
Tried a new USB cable, but that did not work either.  Does connecting 
the KPA-1500 to the computer via a USB cable make a COM port of it's 
own, or must we use a virtual COM port?  If I remember correctly, I 
think I use a Flex Virtual COM port before the power surge?  Or did the 
power surge zap the USB port on the KPA-1500?  Any help appreciated.

Charles  K5UA