Hi Lawrence,
Sorry to hear about the problems.
If you can get into the touchscreen calibration mode, please recal the touch surface as that can solve some of your posted issues.
The jog switch does leave much to be desired though and many have complained about it.
As for mounting in the case, try one side at a time to see which affects operation.
Good luck!
Larry
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On Thursday, March 12, 2020, 1:50:11 p.m. GMT-4, Lawrence Macionski via Groups.Io <am_fm_radio@...> wrote:
Received my NanoVNA H4 yesterday from Maggie King. Unboxed it and 1st thing I did was use the USB cable to charge it. at the USB-C connection a red LED was blinking. This morning Red LED solid.? I decided it had a charge, time to turn it on and check it out..FYI I have a NanoVNA 2.8" since Nov 2019..
1. Turned it on. got a Banner Screen Big blue letters- NanoVNA-H 4 and 11 lines of info..
2. The multi-switch does NOTHING!
3. After 30+ seconds? the right side menu comes up.
? ? a. Multi-switch does not work..
? ? b. touching any option on the right side menu DOES NOTHING.
? ? c. After another 30 seconds it disappears..
4. The screen is now displaying Smith chart and grid, Start 50KHz. Stop 900MHz.
? ? a. only tapping on the screen brings up the right side menu
? ? c. Multi-switch does not work..
? ? d. touching any option on the right side menu DOES NOTHING.
? ? c. After another 30 seconds it disappears..
5. So at this point it is impossible to get into the Calibrate submenu..
? ? a. Multi-switch is not same as my old NanoVNA
? ? b. Multi-switch binding, not operating smoothly.
6. Decision
? ? a. Pack it back up -contact Maggie for replacement
? ? b. Perform a (India help desk term) "KILL THE FLEA" Remove all power - Kill the flea power..
7. Removed all 4 screws and removed circuit board.
? ? a. Battery has removable connection. Removed battery turned on power switch. then 5 seconds later turned off. (KILL THE FLEA)
? ? b. found multi-switch felt "different" (was not smooth operating prior.)
8. Out of the case
? ? a. NanoVNA-H 4 Banner comes up 2-3 seconds
? ? b. Multi-switch works erratically,.
? ? c. can now go to CAL & CALIBRATE Menu -multiple tries.
? ? d. cleaned up the case around the multi-switch to make smoother activation.
9. Reassembled
? ? a. NanoVNA-H 4? is NOT operational
? ? b. Not real happy multi-switch NOT WORKING AGAIN
? ? c. Blue LED flashes irregularly
? ? d. Loosing the case / removing from case? seems to effect operation.
? ? e. Multi-switch intermittent / does not work smoothly.
? ? f. Repeated steps 7-8-9 same results.
10. Conclusion-
? ? a. cold solder joint somewhere.- case torquing board
? ? b. Intermittent multi-switch... looks impossible to replace.
? ? c. Needs replacement / repair
? ? d. DISSATISFIED - Contacting Maggie King.
