Cisco IP Phone 7931 Fails to Boot

[david02hunt]

Hello and thanks for reading. I'm curious if anyone has any ideas on what the issue might be with this phone. 

I noticed that the phone reset itself multiple times <5 over the past week which I thought was odd, but I ignored it because it only lasted 1-2 minutes and everything was back to normal. Today I noticed it was powered off completely. 

I reseated the cable and lights flashed and the screen turned on briefly and then it turned off. Trying a different power outlet and cable gave the same result. I tried the suspect cable on another phone, it worked with no issue.

This isn't PoE this is a 48V .375A power source. Any ideas what may have caused this? Thanks! 

[bill.king1]

The phone may just have died. We've had a few go bad where the phone randomly resets, etc. which if in a call center environment is really a problem.

Also, not sure if this is your same model of 7931, but if so, they are pretty old anyway and went end of life a few years ago?
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7940g/eos-eol-notice-c51-730097.html

[Sadav Ansari]

Phone got faulty seems like having issue on bootstrap loader which means unable to expand firmware from flash memory to initiate its hardware and software.

Raise a RMA with Cisco if phone cover under warranty or under contract.

Pls rate if its “Helpful”. If this answered your question pls click “Accept as Solution”

[Nithin Eluvathingal]

Looks like the phone is dead. Get a replacement phone model or if you need the same model  search google this model got EOl 2019.