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UNI-T UTG962E sig gen. Rasping noise at switch on

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807:
 Sig gen noise.mp3 (126.73 kB - downloaded 70 times.)Does anyone else get a rasping noise when switching on their UTG962E? It doesn't do it every time, but around 50% of the time it does. I haven't opened it up, so don't know if it's coming from the piezo buzzer or the relays.

I've attached an audio file.

Sometimes it goes on for longer & sometimes just a few clicks.

BillyO:
Yikes!  :scared:

That sound is not supposed to come from any sort of electronic device.

I would open it up just to see where the noise is coming from.  Don't worry about your warranty.  Since it's a UNI-T you don't really have a warranty.

coromonadalix:
someking of hissing noise ??   psu section, anything  like switching frequency at startup ??

807:

--- Quote from: BillyO on January 29, 2023, 05:34:05 pm ---Yikes!  :scared:

That sound is not supposed to come from any sort of electronic device.

I would open it up just to see where the noise is coming from.  Don't worry about your warranty.  Since it's a UNI-T you don't really have a warranty.

--- End quote ---

yep. I will open it & try & find where the noise is coming from. Although I'm not sure if I will still be able to fault find it, as the most it goes on for is around 2 seconds. And it doesn't do it every time.  >:(

I was just wondering if anyone else has the same problem. I've seen a few reviews & no one else has mentioned it.  :-//

807:

--- Quote from: coromonadalix on January 29, 2023, 05:54:38 pm ---someking of hissing noise ??   psu section, anything  like switching frequency at startup ??

--- End quote ---

It's not a hissing noise, it's a rasping'farting kind of sound that gradually decreases in frequency.

The sig gen uses a seperate power supply that has a USB socket. The cable supplied is a USB to barrel lead.

I suppose it could be the PSU. I could try a different power supply for a few days to see how it goes.

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