Snoring-snoring-display led?

Hello

I have a Clip of 8 GB and I recently recognized that the screen makes noise (really tiny!) tiny, like his. When the backlight turns off, it stops, too.

Could this be a simple sign of wear or do I have to wait that it will explode one day?

Corey says:

Hello

I have a Clip of 8 GB and I recently recognized that the screen makes noise (really tiny!) tiny, like his. When the backlight turns off, it stops, too.

Could this be a simple sign of wear or do I have to wait that it will explode one day?

This noise comes from a switching power supply.  The display needs a higher voltage that the battery provides so a boost converter is used for the power supply.  This is a common technique of circuit for the rails of high voltage for these portable devices outside a lower battery or 4V.  I see these kinds of chips.  What is surprising is that SanDisk used a switching frequency enough to be heard. Which is not common in those days, but could have been done to maintain consumption of energy or low price. If you push enough power through a wire thin and low enough frequencies you can hear it (been there, done that).

I guess the noise is either tiny inducer in the Clip or even the screen itself.

Tags: SanDisk Sansa

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