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If you have a spare microSD card, I would try that as well.

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Joe

VE1BWV?

On Sat, Aug 19, 2023, 5:09 AM Gordon Gibby <docvacuumtubes@...> wrote:

Good advice!

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On Aug 19, 2023, at 03:16, HA3HZ <gyula@...> wrote:

If I were you, I would disconnect all the connections again and again.
It may happen that, for example, your ribbon cable is slightly crooked or the SD card connector is faulty.
These are all just tips and the solution is up to you.
A workplace memory is that a well-working professional always skipped over the place of error, he considered it good.
When my boss looked it over, the fault was revealed. More eyes see more.

ps.: put it aside and you will find the reason when you relax.
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Gyula HA3HZ