LUMINTOP SD90

Hi friends,
my sd90 after turn on and a short flickering of the led don’t works anymore. What can be? Any idea has wellcome.

What batteries are you using?

Standard procedure is to tighten it all, clean the current carrying surfaces.

Do the green backlit under the switch work?
Do the power bank function work?
Do you have multimeter, to measure voltage across the battery pack?

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