Hi,

I "think/know" that I just "bricked" my H4 by connecting it to a Apple fast charger - using a C type to C type cable.
I tried to replace the chip but manged to damage the PCB in the process, hence the new one.

Is this a known feature for older H4 and do the newer versions suffer the same issue?
It would be a shame to find out the hard way - again!

Cheers John

I smoked my H4 by using a fast charger also. It will still operate
hooked up to an external battery source via USB.


On 5/30/2025 05:07, Jtb4079 via groups.io wrote:

> Hi,
> I "think/know" that I just "bricked" my H4 by connecting it to a Apple
> fast charger - using a C type to C type cable.
> I tried to replace the chip but manged to damage the PCB in the
> process, hence the new one.
> Is this a known feature for older H4 and do the newer versions suffer
> the same issue?
> It would be a shame to find out the hard way - again!
> Cheers John
>

The regulator chip "burnt" out and I damaged the PCB in an attempt to replace it -hence the toasted H4!

There is a warning about max charge rate but there's no mention of not using a fast charge - presumably most nano users are aware of this danger?

The most robust charger I've used for any of my NANOVNAs or TinySAs is 1.5
amperes at 5.5 vdc. No problems for over 3 years of owning these.

Dave - WØLEV

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On Thu, Jun 5, 2025 at 4:21 PM Jtb4079 via groups.io <Jtb4079=
gmail.com@groups.io> wrote:

> The regulator chip "burnt" out and I damaged the PCB in an attempt to
> replace it -hence the toasted H4!
>
> There is a warning about max charge rate but there's no mention of not
> using a fast charge - presumably most nano users are aware of this danger?
>
>
>

--

*Dave - WØLEV*

On 05/06/2025 19:04, W0LEV via groups.io wrote:
> The most robust charger I've used for any of my NANOVNAs or TinySAs is 1.5
> amperes at 5.5 vdc.  No problems for over 3 years of owning these.
>
> Dave - WØLEV

It seems that some modern chargers are incompatible with some devices, or the
other way round! It's safest to stick with a 5V only charger and not one which
offers multiple output voltages.

Read the specification of the target device carefully - it may say "5V only" and
it means that! For example, the tinySA Basic, the Wiki has: "(5v DC) USB
charge" in:

https://tinysa.org/wiki/pmwiki.php?n=Main.FirstUse

Cheers,
David
--
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