Good night, in some old TVs the options to enter and exit TV / AV are controlled by two different keys ... It seems to me that without the remote control you can do nothing, now and I really do not know until when you can get controls remote copies of the originals; In some shops with good data, you go with the brand and model of the TV and ask for the remote control, they by knowledge have to give you the right one, but that depends on the trade.
Another is to remember how your remote control was and with that in mind to review the sales catalogs. You can try to search the original remote control of the TV on the WEB. If I enter the brand and the model in the Google Chrome search engine, these results appear to me: TV-26 or RC6145 these are manufacturer codes, both are the same model, differ from manufacturers ...
Thank you very much, Neg, for the time spent! It does not work to move channels (they do not move, it is nailed in Video), and it has no more buttons on the front panel (it has 5 crazy buttons and I already tried all the possible combinations). The only one that would remain is to get me the remote control, or some analog. I thought that by opening it inside I have a reset button or something.