N2 no signal on Samsung tv

Hi, can someone have a look at this http://ix.io/1XO8 no signal on two samsung tv’s but works fine on 2 different monitors.All worked fine a few weeks ago …thanks

Try to select 4:2:2 option in System->CoreElec settings

Thanks that seems to have fixed it .Now over to odroid forum I get no signal on any OS as of a few weeks ago.