[SOLVED] Identifying & Disabling piezoelectric component in Liebert GXT3 UPS

[tetelestai07]

I bought on eBay an used Liebert GXT3 2000VA UPS for my desktop computer. When power goes off (pretty common where I live) the UPS takes over and its alarm immediately starts beeping, something like once every 3 seconds, what for some people/company may be useful, but it is pretty annoying for me.
I am not electronic savvy, I just need some help on disabling the piezoelectric component. I have checked the boards but I could not locate it visually.
I have 2 questions:

1. Could anyone point me exactly where it is located ?
2. How to properly disable it for good ?

Thanks for any help.

 

[BradtheRad]

Very often it's a tiny (3/8 inch diameter) speaker soldered on a computer's motherboard. It may be in your unit too. If you can't see it then it may be hidden behind a component. A bit of tape placed on top could seal over the beep. Perhaps a small wad of cotton or tissue paper stuffed into the center.

Only if you're very skilled at detail work should you try to detach it or cut traces feeding it.

 

[KlausST]

Hi,

May I ask why not simply press the button to silence it?

Klaus

 

[tetelestai07]

Very often it's a tiny (3/8 inch diameter) speaker soldered on a computer's motherboard. It may be in your unit too. If you can't see it then it may be hidden behind a component. A bit of tape placed on top could seal over the beep. Perhaps a small wad of cotton or tissue paper stuffed into the center.

Only if you're very skilled at detail work should you try to detach it or cut traces feeding it.

Thanks for your answer.
It doesn't seem to have the classic piezoelectric component shape (cylinder, 3/8 inch diameter, with a hole in the center).
I am posting below some pics.

 

[tetelestai07]

Hi,

May I ask why not simply press the button to silence it?

Klaus

Thanks for your reply.
Yeah, there is a silence button, the problem is that it just works for the next single beep, in other words, just a 3 second relief

 

[tetelestai07]

Here are some pics of the beast. Sorry, I should've sent them before.

 

[dick_freebird]

If you can keep normal operation with the guts exposed
(may be a case interlock?) then I'd find a piece of flexible
tubing for a stethoscope and poke around.

Then just squirt some hot glue or silicone down the audio
hole and you'll have a barely audible, if any, sound.

 

[FvM]

I would expect the buzzer either on the controller board (long, vertical, with flat cables to front panel) or on the front panel board (not shown in photos).

 

[tetelestai07]

Thanks for your tip @FvM.
From the front panel (img01c.png) there is a single flat cable that goes to a vertical long board (img02c.png), in the back of the ups.
Scanning the vertical long board, my dumbness does not allow me do identify anything that resembles a piezoelectric. I just see a transformer, capacitors and ICs.

--- Updated Jun 19, 2024 ---

I would expect the buzzer either on the controller board (long, vertical, with flat cables to front panel) or on the front panel board (not shown in photos).

BINGO!!!
It is on the front panel board (img03c.png).
Thanks a bunch @FvM and everyone else.