Some charge cables work and some don't. If you have another cable try it. The cable is likely the issue unless you've used it in the past and it worked with the H4.
73,
Cliff, AE5ZA
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On Aug 9, 2022, at 02:30, Kyle Claisse <kporgaltmail@...> wrote:
Does anyone have a link to a schematic diagram for the HW version
4.3_MS of the NanoVNA-H4? My NanoVNA-H4 doesn't charge (no charge
light and no current flow) when connected to USB. I looked at the
board and its charging IC is an LN4056-H (labeled U2) but none of the
schematics I have found seem use this IC. I am having a hard time
diagnosing the issue without correct schematics. Are these newer
diagrams available publicly?
Thanks,
Kyle
