My problem turned out to be a short between solder tracks of the screen connector, and after clearing it everything is working just fine. Thanks for this info - it might come in handy when I get a V2

Hi Jacques I experienced a very similar problem with my VNA, albeit a SAA V2.2, but perhaps your problem is related. I wrote a readme (below) for myself and have had to use it so far on two of the thr

Thanks for all the helpful advice! I'm happy to report that the problem has been resolved. It turned out to be some tracks shorted out on the LCD cable soldered to the PC board. I brushed the connecti

Have you carefully performed the screen calibration? It would be good to use a stylus of some kind in this operation. *Clyde K. Spencer* wrote:

ps.: If handled skillfully, the easiest way to remove the LCD from the bonded surface with floss is to gain access to the solder joint. Be careful not to damage the connecting cord.

Hi Jacques, Please read the previous post, there may be a manufacturing problem. Solution here: https://groups.io/g/nanovna-users/topic/touch_screen_not_working/69656243?p=,,,20,0,0,0::recentpostdate%

Mine had the same problem. Re-soldered the connections on the ribbon connector and it works perfectly now

It sounds like one axis is shorted (ie: always touching). Using the jog switch, select trhe touch screen test in the config menu and see which axis is not responding then have a look at the soldering

Hi Tripp, I did do the screen calibration, but no success. The device works fine otherwise if I just use the jog wheel. I opened the case to check if the LCD is stressed in any way, but that also look

Try doing a touch cal which is in the config menus wrote: 73, Tripp Sanders K5TRP

My brand new H4 has a strange problem - the touchscreen seems quite normal, but does not respond properly. If I touch the screen it will bring up the menu, but does not seem to recognise WHERE I touch

Thank you so much Gyula, I ordered one there. Jos Op 6-11-2020 om 17:26 schreef Gyula Molnar:

That sounds like an excellent idea! Roy WA0YMH

Dental floss is a good way to cut through the adhesive, and it doesn't stress the LCD. Ed - n5kzw

ps.: select: ST7796 touch

Hi Jos, read this message: https://groups.io/g/nanovna-users/message/16521

Thanks Larry, yes I thought to remember that and searched the forum using "H4 LCD screen" etc. but no luck. Will try again using his name for the search. Best regards, Jos Op 5-11-2020 om 18:35 schree

Hi Ernest, No problem abt the name and thanks for the info. Regards, Jos Op 5-11-2020 om 17:40 schreef ERNEST AEC-RADIO:

Hugen had previously posted the part number in the forum. I think if you search his posts and "LCD" from Nov 2019 through to around Feb 2020, you'll find the post.

Jos: I apologize for not looking at your name... I fat fingered my keyboard....again! gmail.com@groups.io> wrote: