1

I want to remove this buzzer from this UPS PCB. It's very noisy.

For the UPS to continue working, should I just remove the buzzer with a soldering iron? or do I have to put some wire or resistance in-place?

Front side

back side

topcat
  • 13
  • 4
  • 1
    "For it to continue working, should I just remove it..." I know I'm nitpicking, but while I'm pretty sure you mean for the UPS to continue working, should I just remove the buzzer" it would be nice if you would edit your question for clarity on this point. – TimWescott Jan 06 '24 at 21:55
  • Do you want to remove the sounder or reduce the noise? – D Duck Jan 06 '24 at 22:00
  • I removed the buzzer, the UPS still works fine. I might add a resistor & an LED later to know error codes. Thanks. – topcat Jan 06 '24 at 23:11
  • Why did the manufacturer include a buzzer the the UPS at all? Presumably it sounds - perhaps in some sort of blink or morse code - when 1) the main power fails and you're now running on the UPS battery 2) it sounds when the UPS battery is in a discharged state 3) something else is wrong. Why would you want to disable this device that is urgently trying to bring a fault condition to your attention? – D Duck Jan 07 '24 at 08:50

2 Answers2

3

Often with these sounders an easy way to reduce the sound level is to place a piece of tape over the hole.

No soldering, no damage of the device/PCB and to revert back to how it was is just as easy by removing the tape.

D Duck
  • 2,217
  • 1
  • 9
  • 18
3

It would be harder to build the UPS so that it would stop working with the buzzer removed than to build it so that it doesn't notice whether the buzzer is there or not.

Whether someone decided to make it "notice" -- that's up to the UPS manufacturer. If you can figure out how to test your work, take it off and see what happens -- then put it back in if needs be.

TimWescott
  • 46,144
  • 1
  • 42
  • 107