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Why is there a high pitched noise heard from the front HDMI ports?

07-06-2023

This high pitched sound or coil whine is caused by inductance and AC signals and it is normal for it to be audible if you get very close to the front HDMI ports.

Applicable Models

RE6503 Essential Series Education Interactive Display, RE7503 Essential Series Education Interactive Display, RE8603 Essential Series Education Interactive Display, RE9803 Essential Series Education Interactive Display

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