On Fri, Mar 22, 2024 at 11:41 PM, Al Simons

<al@...> wrote:

I pulled the trimmer this afternoon, and it shows ~22k as spec'd, and
the wiper goes smoothly over that range. I don't remember whether it
went all the way to zero at the ends or not, but I've put the wiper
mid-range in my testing and it doesn't change the apparent short between
VCC and GND.

I have raised the black pin spacer blocks on JP303 and 304 to make sure
there was nothing extraneous being hidden, but the board is clean.

I tried to pull the jumpers on display pins 1 and 2, to isolate the
problem to the display board or the carrier board that has the various
components on it, but I was unsuccessful on getting them unsoldered
enough to be able to pull the wires.

So of your list, I think we are down to a shorted C301, or a short on
the display board.? Any other ideas welcome!

Good night.
-Al

On 3/22/2024 18:59, Greg McCain via groups.io wrote:
> C301 sure looks like a bypass capacitor for the 5v feed into the LCD
> board. There to send little spikes and ripples on Vcc (the output of
> the 5V power supply) safely down the ground.
>
> One side of it should have continuity with pin 2 of JP303 (the four
> pin connector).
>
> The other side, I believe, should not show continuity with that pin 2,
> when checked with an ohm meter.
> And of course, there should also not be continuity directly between
> the actual contact ends of the capacitor, unless perhaps . . .
>
> C301 is indeed shorted . . .
> OR There is a short between pins1 and 2 on the LCD component itself,
> OR there is a short through the trimmer resistor (R305)
> OR? if the trimmer resistor can actually be set to '0' ohms.
>
> Can you confirm that the trimmer resistor is? turned all the way
> counter-clockwise (when looking right down on the top of the bugger)?
>
>
> Greg
>
> Greg McCain
> gamccain50@...
>
>
> On Friday, March 22, 2024 at 07:27:20 PM EDT, Al Simons
> <al@...> wrote:
>
>
> With the display board out of the radio, I measured 0 ohms between pin 2
> of the 4 pin connector (GND), and the pad to the right side of C301,
> which is marked VCC on the trace diagram. Seems "odd." Possible shorted
> C301? Unfortunately, I have no surface mount skills or equipment.
>
> What is a path forward?
>
> 73,
> -Al WA1TYB
>
> On 3/22/2024 15:44, Greg McCain via groups.io wrote:
> > Hopefully something simple and/or obvious.
> >
> > Don't forget to check the 2 header connectors on the main board too.
> >
> > Good hunting. Let us know if you solve it.
> >
> > Greg KI4NVX
> >
> >
> >
> > Yahoo Mail: Search, Organize, Conquer
> >
> <
> <>>
> >
> >? ? On Fri, Mar 22, 2024 at 5:05 PM, Al Simons
> >? ? <al@...> wrote:
> >? ? Greg, THANK YOU.? Pulling the display board lets it come up, drawing
> >? ? ~150mA at 6V. The terminal program is running, so it seems that at
> >? ? least
> >? ? part of the CPU is OK.? Now to figure out what I did wrong with the
> >? ? display board!
> >
> >? ? Again, thanks.
> >? ? -Al WA1TYB
> >
> >? ? On 3/22/2024 14:36, Greg McCain via groups.io wrote:
> >? ? > Just a quick thought.
> >? ? >
> >? ? > Without the control board will the unit even power up since the
> >? ? rotary
> >? ? > push to power on won't be available?
> >? ? >
> >? ? > You might try just removing the display.
> >? ? > If the current stays up, then the fault might be in the display
> >? ? board
> >? ? > or the 5v power board.
> >? ? >
> >? ? > I've seen other posts where faults/ bridges/shorts in the power
> >? ? > boards' connector chains have caused odd problems. I took the
> advice
> >? ? > in the build instructions and clipped the one set of pins back
> >? ? about a
> >? ? > millimeter or so because I could definitely see I that a few
> >? ? were too
> >? ? > long and extended past the solder pads and awful close to other
> >? ? items.
> >? ? >
> >? ? >
> >? ? > Greg
> >? ? >
> >? ? >
> >? ? > Yahoo Mail: Search, Organize, Conquer
> >? ? >
> >? ?
> <
> <>
> >? ?
> <
> <>>>
> >? ? >
> >? ? >? ? On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
> >? ? >? ? <al@...> wrote:
> >? ? >? ? Just completed my Rev 3 QMX assembly. It performs the USB stick
> >? ? >? ? emulation ok, to place the FW file on board. I did this both on
> >? ? >? ? initial power-up and by jumpering AUX2 to GND. However, after FW
> >? ? >? ? load, when I press the left knob it draws power for an
> >? ? instant and
> >? ? >? ? then powers back down to 0.000A.? I'm using 7V, limited to
> 200mA.
> >? ? >? ? I have inspected all my joints w/ a magnifier, all seem fine but
> >? ? >? ? I'm considering buying a USB microscope.
> >? ? >
> >? ? >? ? To start troubleshooting I want to check the power boards.? For
> >? ? >? ? easier access, is it safe to power up the unit without the
> >? ? control
> >? ? >? ? board and display boards plugged in?
> >? ? >
> >? ? >? ? I've been monitoring this group since I placed my order.? I
> think
> >? ? >? ? I remember a reference to a troubleshooting guide by Hans, and
> >? ? >? ? another report of this failure mode, but I can't find either.
> >? ? >? ? Pointers to either would be greatly appreciated. I'm aware
> of the
> >? ? >? ? troubleshooting log Hans has posted about units he's fixed,
> >? ? but it
> >? ? >? ? doesn't mention this failure.
> >? ? >
> >? ? >? ? Thanks for any advice and pointers.
> >? ? >? ? 73,
> >? ? >? ? -Al WA1TYB
> >? ? >
> >? ? >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
>

On Sat, Mar 23, 2024 at 12:49 AM, Michael LaBlanc

<mlablan1@...> wrote:

Fellow QRP'ers,

I just completed a rev 3 QMX build.? I am VERY impressed with level of sophistication of this very small piece of kit.

I'm afraid I have made an error in my assembly and I need to ask this forum for a bit of help in sorting it out.

I am happy to say that I was able to flash the firmware and boot up the radio without a problem.? Also, when attached to an antenna I can clearly hear the sounds from the FT8 frequencies (my unit is the 20-10m model) so the receive parts of the circuit seem like they are functioning.? I am also able to connect to WSJT-X and get good decodes at least on 20m (the other bands may have little traffic right now).

However, I have no power output on the transmit side.? I will attach screen shots from the SWR sweep menu utility, but the measurements are erratic and VERY high (all run on a dummy load capable of 25W).? Also, when I go into the Diagnostics screen and press the "t" button, I get 0 power out, about 9.5 volts and the SWR bounces around between 6 and 10.? This behavior is similar on all bands.

My initial theory is that I have somehow messed up the SWR transformer (T507) and this is causing the high SWR protection software to keep the radio from producing any output.? Before I break out the soldering iron again to pull T507 out of circuit and possibly rewire it, I wanted to get some feedback from those with more experience ?

Thank you in advance for any ideas for further troubleshooting steps or alternate theories about what I have done wrong.

73

Mike
KC2EHR

On Mon, 18 Mar 2024 at 8:22, Ronan Cantwell

<ronancantwell@...> wrote:

Similar to Steve's findings; I'm quite happily using the radio for CW and have found that any clicks can be tamed substantially by setting the side-tone volume to "relative" and setting its level somewhere in the mid 60's.?

Are the clicks completely gone? No.
Is the radio usable? Absolutely.... (Well, relatively...)

Onwards and upwards.....

Ronan
MM0IVR?

C301 sure looks like a bypass capacitor for the 5v feed into the LCD
board. There to send little spikes and ripples on Vcc (the output of
the 5V power supply) safely down the ground.

One side of it should have continuity with pin 2 of JP303 (the four
pin connector).

The other side, I believe, should not show continuity with that pin 2,
when checked with an ohm meter.
And of course, there should also not be continuity directly between
the actual contact ends of the capacitor, unless perhaps . . .

C301 is indeed shorted . . .
OR There is a short between pins1 and 2 on the LCD component itself,
OR there is a short through the trimmer resistor (R305)
OR? if the trimmer resistor can actually be set to '0' ohms.

Can you confirm that the trimmer resistor is? turned all the way
counter-clockwise (when looking right down on the top of the bugger)?


Greg

Greg McCain
gamccain50@...


On Friday, March 22, 2024 at 07:27:20 PM EDT, Al Simons
<al@...> wrote:


With the display board out of the radio, I measured 0 ohms between pin 2
of the 4 pin connector (GND), and the pad to the right side of C301,
which is marked VCC on the trace diagram. Seems "odd." Possible shorted
C301? Unfortunately, I have no surface mount skills or equipment.

What is a path forward?

73,
-Al WA1TYB

On 3/22/2024 15:44, Greg McCain via groups.io wrote:

Hopefully something simple and/or obvious.

Don't forget to check the 2 header connectors on the main board too.

Good hunting. Let us know if you solve it.

Greg KI4NVX



Yahoo Mail: Search, Organize, Conquer

<,Organize,Conquer?_sub1=Acquisition?_sub2=Global_YMktg?_sub3=?_sub4=100000945?_sub5=OrganizeConquer__Static_
<,Organize,Conquer&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000945&af_sub5=OrganizeConquer__Static_>>

? ? On Fri, Mar 22, 2024 at 5:05 PM, Al Simons
? ? <al@...> wrote:
? ? Greg, THANK YOU.? Pulling the display board lets it come up, drawing
? ? ~150mA at 6V. The terminal program is running, so it seems that at
? ? least
? ? part of the CPU is OK.? Now to figure out what I did wrong with the
? ? display board!

? ? Again, thanks.
? ? -Al WA1TYB

? ? On 3/22/2024 14:36, Greg McCain via groups.io wrote:
? ? > Just a quick thought.
? ? >
? ? > Without the control board will the unit even power up since the
? ? rotary
? ? > push to power on won't be available?
? ? >
? ? > You might try just removing the display.
? ? > If the current stays up, then the fault might be in the display
? ? board
? ? > or the 5v power board.
? ? >
? ? > I've seen other posts where faults/ bridges/shorts in the power
? ? > boards' connector chains have caused odd problems. I took the

advice

? ? > in the build instructions and clipped the one set of pins back
? ? about a
? ? > millimeter or so because I could definitely see I that a few
? ? were too
? ? > long and extended past the solder pads and awful close to other
? ? items.
? ? >
? ? >
? ? > Greg
? ? >
? ? >
? ? > Yahoo Mail: Search, Organize, Conquer
? ? >
? ?

<,Organize,Conquer?_sub1=Acquisition?_sub2=Global_YMktg?_sub3=?_sub4=100000945?_sub5=OrganizeConquer__Static_
<,Organize,Conquer?_sub1=Acquisition?_sub2=Global_YMktg?_sub3=?_sub4=100000945?_sub5=OrganizeConquer__Static_>

? ?

<,Organize,Conquer?_sub1=Acquisition?_sub2=Global_YMktg?_sub3=?_sub4=100000945?_sub5=OrganizeConquer__Static_
<,Organize,Conquer&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000945&af_sub5=OrganizeConquer__Static_>>>

? ? >
? ? >? ? On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
? ? >? ? <al@...> wrote:
? ? >? ? Just completed my Rev 3 QMX assembly. It performs the USB stick
? ? >? ? emulation ok, to place the FW file on board. I did this both on
? ? >? ? initial power-up and by jumpering AUX2 to GND. However, after FW
? ? >? ? load, when I press the left knob it draws power for an
? ? instant and
? ? >? ? then powers back down to 0.000A.? I'm using 7V, limited to

200mA.

? ? >? ? I have inspected all my joints w/ a magnifier, all seem fine but
? ? >? ? I'm considering buying a USB microscope.
? ? >
? ? >? ? To start troubleshooting I want to check the power boards.? For
? ? >? ? easier access, is it safe to power up the unit without the
? ? control
? ? >? ? board and display boards plugged in?
? ? >
? ? >? ? I've been monitoring this group since I placed my order.? I

think

? ? >? ? I remember a reference to a troubleshooting guide by Hans, and
? ? >? ? another report of this failure mode, but I can't find either.
? ? >? ? Pointers to either would be greatly appreciated. I'm aware

of the

? ? >? ? troubleshooting log Hans has posted about units he's fixed,
? ? but it
? ? >? ? doesn't mention this failure.
? ? >
? ? >? ? Thanks for any advice and pointers.
? ? >? ? 73,
? ? >? ? -Al WA1TYB
? ? >
? ? >

Hopefully something simple and/or obvious.

Don't forget to check the 2 header connectors on the main board too.

Good hunting. Let us know if you solve it.

Greg KI4NVX



Yahoo Mail: Search, Organize, Conquer
<,Organize,Conquer&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000945&af_sub5=OrganizeConquer__Static_>

On Fri, Mar 22, 2024 at 5:05 PM, Al Simons
<al@...> wrote:
Greg, THANK YOU.? Pulling the display board lets it come up, drawing
~150mA at 6V. The terminal program is running, so it seems that at
least
part of the CPU is OK.? Now to figure out what I did wrong with the
display board!

Again, thanks.
-Al WA1TYB

On 3/22/2024 14:36, Greg McCain via groups.io wrote:
> Just a quick thought.
>
> Without the control board will the unit even power up since the
rotary
> push to power on won't be available?
>
> You might try just removing the display.
> If the current stays up, then the fault might be in the display
board
> or the 5v power board.
>
> I've seen other posts where faults/ bridges/shorts in the power
> boards' connector chains have caused odd problems. I took the advice
> in the build instructions and clipped the one set of pins back
about a
> millimeter or so because I could definitely see I that a few
were too
> long and extended past the solder pads and awful close to other
items.
>
>
> Greg
>
>
> Yahoo Mail: Search, Organize, Conquer
>
<,Organize,Conquer?_sub1=Acquisition?_sub2=Global_YMktg?_sub3=?_sub4=100000945?_sub5=OrganizeConquer__Static_
<,Organize,Conquer&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000945&af_sub5=OrganizeConquer__Static_>>
>
>? ? On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
>? ? <al@...> wrote:
>? ? Just completed my Rev 3 QMX assembly. It performs the USB stick
>? ? emulation ok, to place the FW file on board. I did this both on
>? ? initial power-up and by jumpering AUX2 to GND. However, after FW
>? ? load, when I press the left knob it draws power for an
instant and
>? ? then powers back down to 0.000A.? I'm using 7V, limited to 200mA.
>? ? I have inspected all my joints w/ a magnifier, all seem fine but
>? ? I'm considering buying a USB microscope.
>
>? ? To start troubleshooting I want to check the power boards.? For
>? ? easier access, is it safe to power up the unit without the
control
>? ? board and display boards plugged in?
>
>? ? I've been monitoring this group since I placed my order.? I think
>? ? I remember a reference to a troubleshooting guide by Hans, and
>? ? another report of this failure mode, but I can't find either.
>? ? Pointers to either would be greatly appreciated. I'm aware of the
>? ? troubleshooting log Hans has posted about units he's fixed,
but it
>? ? doesn't mention this failure.
>
>? ? Thanks for any advice and pointers.
>? ? 73,
>? ? -Al WA1TYB
>
>

On Fri, Mar 22, 2024 at 5:05 PM, Al Simons

<al@...> wrote:

Greg, THANK YOU.? Pulling the display board lets it come up, drawing
~150mA at 6V. The terminal program is running, so it seems that at least
part of the CPU is OK.? Now to figure out what I did wrong with the
display board!

Again, thanks.
-Al WA1TYB

On 3/22/2024 14:36, Greg McCain via groups.io wrote:
> Just a quick thought.
>
> Without the control board will the unit even power up since the rotary
> push to power on won't be available?
>
> You might try just removing the display.
> If the current stays up, then the fault might be in the display board
> or the 5v power board.
>
> I've seen other posts where faults/ bridges/shorts in the power
> boards' connector chains have caused odd problems. I took the advice
> in the build instructions and clipped the one set of pins back about a
> millimeter or so because I could definitely see I that a few were too
> long and extended past the solder pads and awful close to other items.
>
>
> Greg
>
>
> Yahoo Mail: Search, Organize, Conquer
> <>
>
>? ? On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
>? ? <al@...> wrote:
>? ? Just completed my Rev 3 QMX assembly. It performs the USB stick
>? ? emulation ok, to place the FW file on board. I did this both on
>? ? initial power-up and by jumpering AUX2 to GND. However, after FW
>? ? load, when I press the left knob it draws power for an instant and
>? ? then powers back down to 0.000A.? I'm using 7V, limited to 200mA.
>? ? I have inspected all my joints w/ a magnifier, all seem fine but
>? ? I'm considering buying a USB microscope.
>
>? ? To start troubleshooting I want to check the power boards.? For
>? ? easier access, is it safe to power up the unit without the control
>? ? board and display boards plugged in?
>
>? ? I've been monitoring this group since I placed my order.? I think
>? ? I remember a reference to a troubleshooting guide by Hans, and
>? ? another report of this failure mode, but I can't find either.
>? ? Pointers to either would be greatly appreciated. I'm aware of the
>? ? troubleshooting log Hans has posted about units he's fixed, but it
>? ? doesn't mention this failure.
>
>? ? Thanks for any advice and pointers.
>? ? 73,
>? ? -Al WA1TYB
>
>

Just a quick thought.

Without the control board will the unit even power up since the rotary
push to power on won't be available?

You might try just removing the display.
If the current stays up, then the fault might be in the display board
or the 5v power board.

I've seen other posts where faults/ bridges/shorts in the power
boards' connector chains have caused odd problems. I took the advice
in the build instructions and clipped the one set of pins back about a
millimeter or so because I could definitely see I that a few were too
long and extended past the solder pads and awful close to other items.


Greg


Yahoo Mail: Search, Organize, Conquer
<,Organize,Conquer&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000945&af_sub5=OrganizeConquer__Static_>

On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
<al@...> wrote:
Just completed my Rev 3 QMX assembly. It performs the USB stick
emulation ok, to place the FW file on board. I did this both on
initial power-up and by jumpering AUX2 to GND. However, after FW
load, when I press the left knob it draws power for an instant and
then powers back down to 0.000A.? I'm using 7V, limited to 200mA.
I have inspected all my joints w/ a magnifier, all seem fine but
I'm considering buying a USB microscope.

To start troubleshooting I want to check the power boards.? For
easier access, is it safe to power up the unit without the control
board and display boards plugged in?

I've been monitoring this group since I placed my order.? I think
I remember a reference to a troubleshooting guide by Hans, and
another report of this failure mode, but I can't find either.
Pointers to either would be greatly appreciated. I'm aware of the
troubleshooting log Hans has posted about units he's fixed, but it
doesn't mention this failure.

Thanks for any advice and pointers.
73,
-Al WA1TYB

Many thanks for all the answers :-)

I am quite new to this topic and I know that there are "good" and "bad" toroids in the market to do this job.

Do you have a tip to get the correct ones? For coax I also need a quite large toroid.

Many thanks

73 Thorsten - DO1TG

_._,_._,_

---

On Fri, Mar 22, 2024 at 2:32 PM, Al Simons

<al@...> wrote:

Just completed my Rev 3 QMX assembly. It performs the USB stick emulation ok, to place the FW file on board. I did this both on initial power-up and by jumpering AUX2 to GND.? However, after FW load, when I press the left knob it draws power for an instant and then powers back down to 0.000A.? I'm using 7V, limited to 200mA.? I have inspected all my joints w/ a magnifier, all seem fine but I'm considering buying a USB microscope.

To start troubleshooting I want to check the power boards.? For easier access, is it safe to power up the unit without the control board and display boards plugged in?

I've been monitoring this group since I placed my order.? I think I remember a reference to a troubleshooting guide by Hans, and another report of this failure mode, but I can't find either.? Pointers to either would be greatly appreciated.? I'm aware of the troubleshooting log Hans has posted about units he's fixed, but it doesn't mention this failure.

Thanks for any advice and pointers.
73,
-Al WA1TYB

Hi all,

I just have finised my QMX and I already could receive vis WSJT on LInux quite well. Unfortunately, after sending (endfed or dummyload) usb disconnects.

I tried on 10m and 15m

?

This is the dmesg output:

?

USB disconnect, device number 29

[16356.469230] usb 1-6: new full-speed USB device number 30 using xhci_hcd

[16359.137386] usb 1-6: new full-speed USB device number 31 using xhci_hcd

[16359.473417] usb 1-6: device descriptor read/64, error -71

[16359.732218] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16359.732223] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16359.732226] usb 1-6: Product: QMX Transceiver

[16359.732228] usb 1-6: Manufacturer: QRP Labs

[16359.734607] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16360.794444] usb 1-6: USB disconnect, device number 31

[16360.794862] usb 1-6: cannot submit urb (err = -19)

[16360.795034] usb 1-6: cannot submit urb 0, error -19: no device

[16360.795848] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 5 comp_code 1

[16360.795868] xhci_hcd 0000:00:14.0: Looking for event-dma 00000002327705f0 trb-start 0000000232770600 trb-end 0000000232770600 seg-start 0000000232770000 seg-end 0000000232770ff0

[16363.261224] usb 1-6: new full-speed USB device number 32 using xhci_hcd

[16523.538305] usb 1-6: new full-speed USB device number 33 using xhci_hcd

[16568.470382] usb 1-6: new full-speed USB device number 34 using xhci_hcd

[16595.342519] usb 1-6: new full-speed USB device number 35 using xhci_hcd

[16595.493289] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16595.493305] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16595.493312] usb 1-6: Product: QMX Transceiver

[16595.493318] usb 1-6: Manufacturer: QRP Labs

[16595.496693] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16595.621351] usb 1-6: USB disconnect, device number 35

[16596.578467] usb 1-6: new full-speed USB device number 36 using xhci_hcd

[16596.737322] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16596.737337] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16596.737347] usb 1-6: Product: QMX Transceiver

[16596.737355] usb 1-6: Manufacturer: QRP Labs

[16596.740588] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.135622] usb 1-6: USB disconnect, device number 36

[16616.136286] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16616.446588] usb 1-6: new full-speed USB device number 37 using xhci_hcd

[16616.597357] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16616.597372] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16616.597380] usb 1-6: Product: QMX Transceiver

[16616.597385] usb 1-6: Manufacturer: QRP Labs

[16616.600536] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.772816] usb 1-6: USB disconnect, device number 37

[16619.706635] usb usb1-port6: connect-debounce failed

[16641.666740] usb 1-6: new full-speed USB device number 38 using xhci_hcd

[16641.816766] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16641.816781] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16641.816788] usb 1-6: Product: QMX Transceiver

[16641.816794] usb 1-6: Manufacturer: QRP Labs

[16641.821957] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16676.663594] retire_capture_urb: 2 callbacks suppressed

[16679.996568] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960951] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960977] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961290] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961312] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961404] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961426] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961502] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961520] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961551] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961570] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961582] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961630] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961648] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961661] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961697] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961713] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961726] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961743] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961810] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961828] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961859] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788561] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788718] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788753] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789044] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789189] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789218] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789309] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789346] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789419] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789447] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789527] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789559] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789616] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789634] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789652] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789689] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789708] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789725] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789739] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789756] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789773] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789793] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.660993] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661103] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661209] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661262] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661865] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661971] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662118] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662182] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662315] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662371] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662531] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662585] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662660] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662710] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662780] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662829] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662901] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663000] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663098] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663150] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663238] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663293] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663672] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663757] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663921] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664125] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664181] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664465] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664528] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664650] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664709] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16747.699359] usb 1-6: USB disconnect, device number 38

[16747.699441] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16747.699551] usb 1-6: cannot submit urb 0, error -19: no device

[16747.699573] usb 1-6: cannot submit urb 0, error -19: no device

[16748.015137] usb 1-6: new full-speed USB device number 39 using xhci_hcd

[16748.143155] usb 1-6: device descriptor read/64, error -71

[16748.379186] usb 1-6: device descriptor read/64, error -71

[16748.619152] usb 1-6: new full-speed USB device number 40 using xhci_hcd

[16748.747174] usb 1-6: device descriptor read/64, error -71

[16748.983189] usb 1-6: device descriptor read/64, error -71

[16749.091263] usb usb1-port6: attempt power cycle

[16749.571099] usb 1-6: new full-speed USB device number 41 using xhci_hcd

[16749.571251] usb 1-6: Device not responding to setup address.

[16749.779215] usb 1-6: Device not responding to setup address.

[16749.987149] usb 1-6: device not accepting address 41, error -71

[16750.115156] usb 1-6: new full-speed USB device number 42 using xhci_hcd

[16750.115345] usb 1-6: Device not responding to setup address.

[16750.323333] usb 1-6: Device not responding to setup address.

[16750.531174] usb 1-6: device not accepting address 42, error -71

[16750.531306] usb usb1-port6: unable to enumerate USB device

What should I do now?

73 Thorsten - DO1TG