Re: My question isn't about the fault, its about how to find it.

On 17/09/2024 10:37, The Natural Philosopher wrote:

Anyway the final conclusions seem to be :

1. The ZERO 2W is hungrier for electrons than the old ZERO W.
2. The symptoms of starvation are evident first in the WiFi hardware.

The Zero W uses the same SOC as original Pi, and I ran that happily for
years on a 0.7A first generation Samsung Galaxy phone charger. When we
got the multicore Pi 2B it really needed a proper PSU rather than a
phone charger for reliability. The Zero 2W initially used the same SOC
as the 2B, then switched to the 3B's one when that was no longer available.

5. Whilst a chinesium USB source *may* be able to deliver the quoted
current, it is not necessarily  able to deliver it in a noise free or
voltage-retaining fashion.

You can't go wrong with the official power supply, I've not had one fail
yet. I've used others when I needed a longer USB cables, and have had to
replace some more than once.

Now I have achieved stability, the unit will go to a different location
to further development where it will naturally connect to the original
POS wifi point.

You might guess I recommend not scrimping on the access point either.

But I now have a microwave with a burnt out magnetron to fix...

Not related to the Z2W I hope!

---druck