Need remote for aomni AL420D7 - AOMNI Corporation Magnavox 20MF500T/17 20 in. EDTV-Ready LCD TV

The make doesn't exist.

https://www.google.com/search?q=aomni+television+remote+code

Try this

https://www.fixya.com/support/r29872378-universal_remotes_no_facsimile_remote

..

I've never heard of being able to deactivate inputs on a TV. You just select which one you're using at the moment. Usually using a source button or source selection in an on-screen menu.

no you cant,one of the boards inside is bad

I'm not familiar with that particular brand, however most televisions have several things in common.

Check your audio settings (should be accessible through your remote), and make certain that the audio is set to "SPEAKERS" and not some other setting such as "AUDIO EQUIPMENT" or the like.

027,022,021,025. Try these codes. If you wish to get more; check the site linked here. It has set-up code list & set-up procedure to many popular brand remote controls. See it in "Mosaic" or "Magazine" view. It will make surf easier.
http://electrohelponline.blogspot.com/
Try this link too
http://remotesearch.blogspot.com/

radio shack, $10

You need a SET UP Remote Control. That will take you to a menu where you can take it off of HOTEL MODE. I have one maybe we can help each other out. emailme

Buy them for them on internet, all are available

If it's locked because of parental controls,unplug it for a minute,that'll let you reset passcode.