C6250 cannot lock upstream

[FL20]

Hello the amazing community
My internet went down about 2 hrs ago, upstream channel LED blinking, called xfinity service they said the can see the modem online. Multiple power cycle/plug unplug attempts did not help.

Looking into the cable connection page it shows only one downstream channel is locked at -0.1dBmV power and 41.4dB SNR while no Upstream channel is locked power was 27.3 dBmV, as shown in the attached image.

Does this mean I have a line issue or is it on the modem? Would you advise my next step?

Thank you

Francis

[FL20]

I am having problen uploading images, I type the Cable connection content below:

Upstream Parameters acquired

Downstream
Channel 1
Status Locked
Modulation QAM256
ChannelID 20
Frequency 669000000 Hz
Power 0.4 dBmV
SNR 40.3
Correctables : 0

Upstream
Channel 1
Status Not Locked
US channel type : ATDMA
Chnn ID 3
Symbol rate: 5120 K
Frequency 26000000Hz
Power 53dBmV

[plemans]

do you have a screen snip of the cable connection page and the logs? 
That helps.

If you have any splitters, amplifiers, or attenuators in line, remove them.