Reported aﬀected models: UE40K5600AK, UE40F6670SB, UE40KU6000. Likely affects all 2016 models, previous years models are not affected.
Samsung issued a large UI upgrade in 2016 which has resulted in reduced CEC functionality. We have reported the fault that it is not possible to switch sources via CEC in the 2016 series.
We have informed Samsung of this problem, meanwhile we are advising of the following possible solutions:
1) Update TV frmware to latest version.
(15/7/2016 Update: No known working version)
2) Use IR custom profile to program colour or number buttons on remote to select sources.
3) Use card remote or programmable universal remote to select sources
4) Use web app to select sources