Back UPS ES 750 makes a constant beeping sound when powered on

[Anonymous user]

Model & Serial Numbers:

BE750G

5B1127T18086

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When the unit is plugged in directly to a wall outlet, it makes

a continuous beeping sound. I removed all devices that were

plugged into the ups.  I plugged an electric pencil sharpener

into the Surge Protection outlets, and it will still work, even

though the ups is beeping.

When I plug the sharpener into the Battery Backup + Surge

Protection outlets, the sharpener does not work.  The circuit

breaker button remains out at all times. I pressed and held

it for a few seconds, but it pops right out when released.

I also disconnected the battery that was connected to a

red & black wire. I re-connected the black cable, and touched

the red cable to the lead on the battery, and it sparked. The

black cable has a white plastic casing around the lead which

prevents it from being connected to the battery incorrectly.

Can this ups be fixed?

Thanks a bunch,

Adrianne

[BillP · Accepted solution]

Aside from the tone that it makes, do you see any Red or Green LED that lights up?  If you do, can you tell us the pattern that it makes?