Noise in standby mode

[Smileyk11]

I have this printer HP M281fdw, and when it’s in standby mode, it has high pitched sound. 
I already tried below method, is there any other things I can try? 

1. Turn the printer on, if it is not already on.
2. Wait until the printer is idle and silent before you continue.
3. With the printer turned on, disconnect the power cord from the rear of the printer.
4. Unplug the power cord from the wall outlet.
5. Wait at least 60 seconds.
6. Plug the power cord back into the wall outlet.
7. NOTE: HP recommends connecting the printer power cord directly to the wall outlet.
8. Reconnect the power cord to the rear of the printer.
9. Turn on the printer, if it does not automatically turn on.
10. Wait until the printer is idle and silent before you proceed.

[A_Gayathri]

Hi @Smileyk11,

Welcome to the HP Support Community

I understand you are facing an issue with your HP Color LaserJet Pro MFP M281fdw Noise in standby mode. Not to worry I will help you to get a resolution to resolve the issue.

Let's perform a power drain: 

• With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.
• Remove USB cable, if present.
• Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
• Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer.
• Turn on the printer and wait till warm-up period finishes and the printer is idle

try to disconnect and reconnect the power cord and try connecting to the different wall outlet and check if you are getting the sound 

Hope this helps! Keep me posted. 

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