I got a tip for this and in this tip are codes you can TRY, now the sky universal remotes are senstive to tv codes so you need to try the manufacture codes if that does not work then you need to ditch the sky remote and get a remote that works with the sky box and the tv as a solution. IN my tip there are remote solutions as well, please do not shoot the messenger I am not sky or the manufacture I am just helping for free,

http://www.fixya.com/support/r4873816-universal_remotes_remote_codes

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620