constant high-frequency whistle of the device - even with a replacement unit

constant high-frequency whistle of the device - even with a replacement unit

HP OfficeJet 4630 Multifunction (printer, scanner, copier, fax, Resolution: 4800 x 1200 dpi, USB 2.0) Black (Accessories)
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Customer Review

The display or a unit directly behind the power button / screen makes high-frequency whistle - that makes me mad, the older people in the house did not hear.

We then requested a replacement - same problem.

Anyone with such a noise has no problem or simply due to age can not hear or did stand the printer in the storeroom can access like :)

Otherwise, the functions of the printer ago is good!

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