Ticking noise from D850 after prolonged USB connection to PC

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MrWinnieThePooh Regular Member • Posts: 146
Ticking noise from D850 after prolonged USB connection to PC

I normally download photographs from my D850 to a PC using a USB cable.

Yesterday, after downloading, I accidentally left the D850 connected to the PC by the USB cable for a prolonged period (over 1 hour). I suddenly noticed a ticking noise, like an electric spark, about once a second, coming from the camera. The green "Memory card access lamp" was flashing with the same frequency.

After disconnecting the camera from the PC, the ticking continued. I removed the battery and the memory card, and reinserted them. Thereafter everything was back to normal and the camera seems to be functioning fine. Reconnecting to the PC also works fine.

Has anybody else had a similar experience? There does not seem to be any indication of a fault with the camera, and I wonder whether this is just normal behaviour.

Nikon D850
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