Yealink T48S screen does not recognise touches after provisioning

[SMB47]

I've set up a small 3-phone home test lab on a RaspberryPi. It all works great and much easier than FreePBX. However, one of my phones, the Yealink T48S, has a problem. It still works fine in terms of making and receiving calls using the physical buttons, but the screen no longer recognises touches. I've done a factory reset on the phone but the screen still doesn't respond to touches. It was working just fine on FreePBX before 3CX provisioned it. I can't believe it's just died the exact minute I switched from FreePBX to 3CX. I've seen another post like this elsewhere, so I'm wondering if 3CX has corrupt the firmware in some way?

 

[VasilisV_3CX]

Hi @SMB47,

Can you provide a few more details?

Is the T48S firmware up to date?

 

[SMB47]

Hi, yes, the phone is on 66.85.0.5.

Other info:

3CX Version: Standard Annual 16.0.8.9
Server OS: Raspberry Pi (local network)
IP Phone: Yealink T48S firmware 66.85.0.5 (latest)
Provisioning Method: Local
Trunk Provider: SIPGate UK
Has the Firewall Checker passed: ?
Are custom Phone Templates being used: NO

 

[JohnS_3CX]

Hi @SMB47

If the problem persists following a factory reset then it sounds fairly certain it's a hardware problem.

I would recommend to contact your reseller or Yealink service center to have it looked at or replaced.