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FW: Nano VNA not starting

[email protected]
 

Hi,



I received my Nano VNA today.

The display turns on but there is no smith chart that comes up.

Only the start and stop frequency values are visible.



Please find the image below.

What can I do to make it work?


Yachna

IMG_3869.jpg

[email protected]
 

Have you tried to read the instructions?
[email protected]
 

I thought I did. But I'm clearly missing something.

Do I need to load a suitable firmware?
Unable to see from the user guide if that's what I'm supposed to do first.

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of aleks07111971@...
Sent: 21 September 2020 14:08
To: [email protected]
Subject: Re: [nanovna-users] FW: Nano VNA not starting

Have you tried to read the instructions?
 

I would try to loosen or remove the top cover. Sometimes the cover presses the screen at some point and this causes a malfunction.
Igor.
[email protected]
 

Removing the covers didn't help either.
I've also tried to disconnect/connect the battery again.
No luck there.

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Igor Jobim
Sent: 21 September 2020 14:56
To: [email protected]
Subject: Re: [nanovna-users] FW: Nano VNA not starting

I would try to loosen or remove the top cover. Sometimes the cover presses the screen at some point and this causes a malfunction.
Igor.
 

Can you connect the nanovna to the USB? Maybe start with the command clearconfig?
Or also force the DFU mode through the jumper of the "booto" and "vdd" pins to try to update the equipment's FW.

original.jpg

 

He probably needs to enable at least 1 marker to see anything useful.

On Monday, September 21, 2020, 7:47:03 a.m. EDT, Igor Jobim <igor.jobim@...> wrote:

Can you connect the nanovna to the USB? Maybe start with the command clearconfig?
Or also force the DFU mode through the jumper of the "booto" and "vdd" pins to try to update the equipment's FW.
 

I can reproduce what happens to you, if I leave the screen pressed when turning on the nanovna.

WhatsApp Video 2020-09-21 at 09.00.11.mp4
WhatsApp Video 2020-09-21 at 09.00.11.mp4

 

Hello! could you take a detailed photo of the PCB?
--
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§¥§à§ß§Ö§è§Ü§Ú§Û §¥§Ö§ß§Ú§ã. §á§à§ß§Ö§Õ§Ö§Ý§î§ß§Ú§Ü, 21 §ã§Ö§ß§ä§ñ§Ò§â§ñ 2020§Ô., 12:57 +03:00 §à§ä yachnakr@... :

Removing the covers didn't help either.
I've also tried to disconnect/connect the battery again.
No luck there.


-----Original Message-----
From: [email protected]< [email protected]> On Behalf Of Igor Jobim
Sent: 21 September 2020 14:56
To: [email protected]
Subject: Re: [nanovna-users] FW: Nano VNA not starting

I would try to loosen or remove the top cover. Sometimes the cover presses the screen at some point and this causes a malfunction.
Igor.
 

i am thinking he has the Smith chart turned off

73,

Bill KU8H

bark less - wag more

On 9/21/20 8:03 AM, Igor Jobim wrote:
I can reproduce what happens to you, if I leave the screen pressed when turning on the nanovna.
Clint Jay
 

That screen looks very scuffed for a brand new device, are you sure there's not a screen protector on it?
________________________________
From: [email protected] <[email protected]> on behalf of yachnakr@... <yachnakr@...>
Sent: 21 September 2020 08:21
To: [email protected] <[email protected]>
Subject: [nanovna-users] FW: Nano VNA not starting

Hi,



I received my Nano VNA today.

The display turns on but there is no smith chart that comes up.

Only the start and stop frequency values are visible.



Please find the image below.

What can I do to make it work?


Yachna
 

In some rare cases not start or si5351 or AIC3204. In this case no sweep. You can touch screen, and see menu. But no trace on it.
If made off/on all startup normally.

If you already check touch issue and remove front panel not help, possible you have broken or si5351 or AIC3204

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