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So I have this cheap, LED clock...

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/320601935/m/5590004224

April 08, 2017, 09:36 PM
hudr
So I have this cheap, LED clock...
Should it be making an audible humming sound?
I don't have the best hearing, but this thing is louder than a lot of microwave ovens....
April 08, 2017, 09:47 PM
FiveFiveSixFan
All my LED clocks are silent. Is it just a clock or does it also have a radio? At times, I've accidentally managed to turn on the radio and if it's not tuned in to a station and the volume is rather low, it makes noise like you describe.
April 08, 2017, 11:34 PM
hudr
quote:
Originally posted by FiveFiveSixFan:
All my LED clocks are silent. Is it just a clock or does it also have a radio? At times, I've accidentally managed to turn on the radio and if it's not tuned in to a station and the volume is rather low, it makes noise like you describe.


Just clock/alarm.
Maybe it's a Decepticon.....
April 09, 2017, 12:11 AM
zoom6zoom
Humming? Try putting it an a talk radio station. Perhaps it forgot the words to the music.



I have my own style of humor. I call it Snarkasm.
April 09, 2017, 12:26 AM
Twist18
Is it in a briefcase? Did you get it from some kid named Ahmed? Big Grin
April 09, 2017, 06:51 AM
r0gue
might be the transformer in the power supply



April 09, 2017, 08:32 AM
MikeinNC
I have a radio/clock combo from circa 1979....

still use it for the alarm...

occasionally it hums loudly

I smack it on the top and it quits humming for a few months or so...


"Violence, naked force, has settled more issues in history than has any other factor.” Robert A. Heinlein

“You may beat me, but you will never win.” sigmonkey-2020

“A single round of buckshot to the torso almost always results in an immediate change of behavior.” Chris Baker
April 09, 2017, 08:35 AM
mbinky
quote:
Originally posted by hudr:
Should it be making an audible humming sound?


Is this for a school science project? Wink
April 09, 2017, 08:38 AM
RonJon
quote:
Originally posted by MikeinNC:
I have a radio/clock combo from circa 1979....

still use it for the alarm...

occasionally it hums loudly

I smack it on the top and it quits humming for a few months or so...


Replace the largest electrolytic capacitor in the power supply area with the same specs.

Voila! - No more hum! Smile
April 09, 2017, 10:34 AM
trapper189
quote:
Originally posted by hudr:
Should it be making an audible humming sound?
I don't have the best hearing, but this thing is louder than a lot of microwave ovens....


Does your microwave go off every morning when it's time to get up? Maybe it's time for new glasses to?