PRLog (Press Release) – May 06, 2011 – Laptop AC adapters, while generally very quiet, do emit a small amount of noise. Generally, this noise is within the parameters of the adapter's normal operation, but variance of the sound or new noi my photo and wallpaper ses may indicate a malfunction.
Normal Operation o A high-frequency sound from the AC adapter is normal. The sound may often be too high-pitched or too quiet to hear, though it may increase in volume after long periods of connection. oled technology on mobile phone p>
Warning Sounds o Some adapters come equipped with an internal sound, often a consistent beeping, to warn the user of incorrect operation. Adapters acting in this way may not supply power correctly to the laptop, and should be replaced.
Other Sounds o While some noise is normal, a sudden change in the consistency or type of noise may be indicative of a problem. A snapping sound, for instance, can accompany an electrical problem. Adapters displaying abnormal noises should be repaired or replaced, as damaged adapters pose a risk of electrical shock.
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