Hi. I got Buch T.v but I lost the remote. Now I can't change the mode of tele from the touch buttons I can change uhf and vhf frequency but not the Av1 and Av2 if any body now out there how to do this without remote could u let me know . Many thanks

Do you have Video, or A/V, or Input switch under front panel, sometimes they
Toggle through A/V1, A/V2, TV. Or something. Repeatedly press to go through choices?

Universal remote may be of help.