Hi, I accidentally lost the channels; I have difficulty resetting it because the front part of the TV is gone so I don't know what the buttons are. Does anyone know how to do it?
Thank you:)

Hi vandiessen, welcome to AMHD!

Could you please give us some more information?
What Panasonic TV do you have? Model name/number?
How did you "lose" the channels? Do you mean it won't let you change channel? Have you tried switching through your inputs?
What do you mean by "the front part of the TV is gone"? What would you call the "front part" and where did it go?
Do you have a remote? Have you tried using that, or maybe a universal set to it's IR channel?

Just an old model: TC-25V40H
I tried pushing the buttons on the right and had some success resetting the channels.
I think you have to hold the 1st button down and the third button at the same time.
Don't know what the last button is for. Yes I have a remote.