BX750MI-GR only beeps and does not start

[frooop]

Hello,

I have a BX750MI-GR that only beeps if I try to start it. The pattern, however, is not described in the manual.

I'm hoping that someone here can tell me what's wrong with this unit. At first, I thought it was just the battery that died, so I replaced it, but this did not help.

I've attached two videos. One shows the unit if it is not plugged into a socket (so it is only on battery), and the other shows it when it is plugged into a socket and has external power.

[Teken]

Given the system appears to be in a unknown state and if still under warranty I would recommend you contact APC Technical Support as the hardware is covered by a two year warranty.

You’ll need the purchase receipt, serial number, and brief description of the problem. 

You may try a brain dead reset on the system to see if it resolves the issue. I have appended the steps to do so for your specific model here:

https://www.apc.com/us/en/faqs/FAQ000265289/

If the above fails in the interim connect the system to a computer running APC Power Chute software. Once the two are connected power up the UPS to see if the system declares an active fault / error code.

Please relay what you see and observe relating to any errors. Let me know what the system indicates the battery status is?!?

Does it show connected and charging? If it says online what voltage is being reported by the system?

Since you replaced the battery earlier please ensure you update the battery installation date if available in PCPE.

All of the above information and steps will be asked of you by APC Technical Support. 

Lastly, what is the current status of the yellow battery disconnect plug?

Let me know . . .