开云体育

I am a new NanoVNA user. Mine is an H v3.6. No firmware updates have been
done. I have been using it only for a few days. Sometimes, on sliding the
switch on, the screen is blank, but the blue LED is lit. After a few on/off
cycles, the screen becomes functional and I can use it.

Does any of you have a similar problem?

Jon, VU2JO

I have the same problem. Nanovna-H, Firmware V. 1.2.40. Had it for several years.
Also the menu seems to start by itself, and go into whatever setting it feels like. Maybe case is interfering with the touch screen. sometimes I can press lightly on case and the menu acts randomly.

I will try that next time!

73

Jon, VU2JO

On Mon, Feb 17, 2025 at 10:54?PM Barry Leonard KN4JRF via groups.io <w9jbl=
[email protected]> wrote:

I have the same problem. Nanovna-H, Firmware V. 1.2.40. Had it for
several years.
Also the menu seems to start by itself, and go into whatever setting it
feels like. Maybe case is interfering with the touch screen. sometimes I
can press lightly on case and the menu acts randomly.

Fixed the jumpy menu (kinda). Put two 0.7mm/0.027in flat washers as thin spacers on rt. side on NanoVNA (see foto) to keep cover from pressing on touch screen.

My version appears a bit different.

73

Jon, VU2JO

On Fri, Feb 21, 2025 at 10:08?PM Barry Leonard KN4JRF via groups.io <w9jbl=
[email protected]> wrote:

Fixed the jumpy menu (kinda). Put two 0.7mm/0.027in flat washers as thin
spacers on rt. side on NanoVNA (see foto) to keep cover from pressing on
touch screen.

I'm starting to think that adding the washers, (in other words increasing the space between the NanoVNA's front/top cover and the touchscreen just a teeny bit) solved the start-up problem as well, because when I press the menu on-off/toggle control while I turn the power on, I get the same blank screen as described above.