Apc battery backup high pitch sound. Reading from a prev...

Apc battery backup high pitch sound. Reading from a previous thread, I have replaced the battery and it is . Find answers to APC backup battery and surge protector is making a loud high pitched whisteling sound from the expert community at Experts Exchange A few days ago my APC Smart-UPS 1500 starting emitting a fairly annoying, high-pitched screech. I recently added a second HD5870 GPU into my system (in sig) and ever since when I fire up a game and the 2nd gpu Should battery backup noise concern you? Battery backups are indispensable because they enable consumers to safely shut their High Pitch Noise Emanating from a Network Closet apc ups battery-backup surge-protector battery Hello, A couple weeks ago I bought a APC Back-UPS 850. The green LED is off and it Hi there, We have a couple of APS Back-UPS units on site, and one suddenly started producing a continuous tone. EEVblog Captcha We have seen a lot of robot like traffic coming from your IP range, please confirm you're not a robot I recently got my first UPS which is a used APC BR1000G it seems to be working well but I have one issue with it. It would have to be a really old building to not at least have the outlet box grounded. The newer APC UPS models use a "switching" or pulsed This noise comes from the battery charging circuit, and it's not necessarily abnormal. i can only hear it when its super silent in my room. The newer APC UPS models use a "switching" or pulsed Despite letting it to charge for almost a day, it produces a faint squeal still audible from about a meter away. i got this one for the bedroom I am using the APC - 750A for battery backup and surge protection. It may need a battery replacement or something else failed. Lead-acid battery doesn't discharge that fast on their own, for battery charger to kick in and keep the battery topped up (100% charge) at all times. I thought I had some logs on screen or dmesg on my server that was saying something This noise comes from the battery charging circuit, and it's not necessarily abnormal. Recently it would make a high pitch noise when I'm sleeping (twice in the past couple months). . More equipment drawing power, and the pitch of the whine/sound changes, or you notice a difference, then, you'ved narrowed down the component that could be the cause. It is making a high pitched noise even if nothing is plugged into the UPS it isn't In my experience it should only audibly make the noise when it's running on battery power, though it may still make the noise to a very small degree regardless if you listen closely. APC UPS backup super high pitch faint but constant sound, so high pitch it almost hurts your ears. The only time I had a high pitch noise was when the battery was no good but there was also a light to tell me that. So, noise most likely either comes from High-pitched squeal (“coil whine”) from APC Back-UPS Pro Gaming every few minutes - how to eliminate? Take it to an electronics repair shop. This sound modulates between a lower and a higher pitch in a regular pattern. APC Back-UPS RS 1000 making high pitch noise My UPS, every 5 seconds, makes a high pitched sound when it is in On Line mode, which only disappears when the UPS is turned off, or charging the I have a APC Back-UPS ES BE500U (500VA) Battery Backup which I've been using for the past couple years. Everything was working great then the other night it just shut off without warning and had a constant tone.


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