[Elecraft] KPA-1500 s/n 56

[Ed Gilliland]

Thanks Bob,

I looked at the USB-B connector again, unplugged from the WinKeyer and 
plugged into the KPA1500, no virtual port was created.

Elecraft agrees with you about the USB chip being bad.  They've sent me 
an RSA so the amp will go back for service.  I asked if we could do a 
board swap but they have other mods to make to the RF deck and that they 
will give the amp top priority repair status.

I used USBDeview, no PROLIFIC drivers and the three COM ports listed are 
all using FTDI drivers.  Nice utility, thanks.

73, Ed


On 4/3/2018 04:37, Bob Wilson, N6TV wrote:
> Another possibility, especially if you are reaching behind the KPA1500 
> to insert the USB cable, and can't see the connectors well, is that 
> you've accidentally pushed the square USB-B plug it into the square 
> RJ-45 (Ethernet) connector instead of into the USB-B connector which 
> is just above it.
>
> 73,
> Bob, N6TV
>
> On Mon, Apr 2, 2018 at 8:55 PM, Bob Wilson, N6TV <n6tv at arrl.net 
> <mailto:n6tv at arrl.net>> wrote:
>
>     Ed,
>
>     Did you ever install any Prolific USB devices in your system? 
>     Prolific Device Drivers are buggy and can often interfere with the
>     FTDI drivers.  Prolific Device Drivers can be uninstalled.
>
>     You can use the free USBDeview facility to look for this:
>
>     https://www.nirsoft.net/utils/usb_devices_view.html
>     <https://www.nirsoft.net/utils/usb_devices_view.html>
>
>     Scroll down to the bottom of the page and click to download the
>     64-bit version, (direct link
>     https://www.nirsoft.net/utils/usbdeview-x64.zip
>     <https://www.nirsoft.net/utils/usbdeview-x64.zip>). Unzip to empty
>     directory, then run usbdeview.exe. Scroll way over to the right
>     and click on the column header "Device Mfg" to sort by that
>     column.  Look for "Prolific" in the list.  Right click and
>     uninstall. Then reboot and reconnect the USB cable to the KPA1500.
>
>     If it's still not recognized, you may have a bad USB port on your amp.
>
>     73,
>     Bob, N6TV
>
>     On Sun, Apr 1, 2018 at 11:43 AM, Ed Gilliland <w5tm001 at gmail.com
>     <mailto:w5tm001 at gmail.com>> wrote:
>
>         I received my KPA-1500 s/n 56 last Friday and have it on the
>         air. All is well with the exception of not being able to use
>         the KPA-1500 Utility.  I do not get a notification sound from
>         the computer when I plug the USB cable into the computer. I've
>         reset the KPA-1500, tried different USB ports, no success. 
>         Any suggestions appreciated.
>
>         Thanks, Ed W5TM
>