09-05-2019, 10:57 AM
Many of electronic devices are equipped with DC/DC converters. And may be in more than a half cases you may hear the vibration of converter components being very close to the board. Usually these sounds are quite enough to be not noticeable.
If you hear the sounds at a distance, say, 0.4m, it is unusual. I'm hearing none from mine ROCKpro64. You may try to touch and slightly press the inductors and the capacitors on the board, one by one, to determine which component is most loud and is changing it's sound when being touched.
If you hear the sounds at a distance, say, 0.4m, it is unusual. I'm hearing none from mine ROCKpro64. You may try to touch and slightly press the inductors and the capacitors on the board, one by one, to determine which component is most loud and is changing it's sound when being touched.