Ant A and ant B

You should be able to use a universal remote. It will search the frequency for you. TYVM Please leave feedback

The A/B and video functions of the remote are not applicable to the KV-1415AS TV.
There is no video in and monitor out.
You have to connect it to your RF socket, ANT IN.
If your player, eg a DVD player does not have RF out or ANT.OUT you have to use an AV to RF converter.
These usually have 3 RCA plugs for AV in and one ANT.out socket.
Then tune an unused TV channel to the converter.
The standard is usually CH.37.
Some converters come with In/Out ANT sockets, and a TEST pattern switch for easier tuning.
Your local supermarket or HiFi/TV outlet should keep these at a few bucks.
Does this help?
Regards, Clive.

You need to set the antenna input back to ANT A (1), you are ANT B (2) right now that why you are not seeing any signals.
Use the INPUT button on the remote to scroll through until you see ANT A which is the one your kid use for the cable connection,
You should download this user manual:
http://www.retrevo.com/support/Hitachi-50GX49B-TVs-manual/id/371bh845/t/2/

Let me know if it works.

must be off channel, if using cable box make sure its on ch 3, also check Ant switch on remote if two ant inputs

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

Press input repatley until you get to (ant 1)
or (ant 2) then press the chanel up/down to
get to ch 3 make sure the converter box is
conected to ant input.

When you say "can't get the TV to play through the VCR", do you mean that you can't get the cable-stations to play through the VCR to the TV? I'll assume that's what you're trying to accomplish.

The most common way to connect a VCR to a TV is through a coaxial cable, from the port on the rear of the VCR labeled "Out to TV." There should be another coaxial port labeled "Cable/Ant In." This is where I picture your cable programming is currently connected.

Instead, it sounds like you connected the VCR to a modulator (probably thru RCA composite cables, which have yellow / red / white plugs). Then the modulator connects to the TV thru a coaxial cable. This will successfully play the VCR to whatever specific channel (perhaps 2, 3 or4), but the modulator doesn't know of any other signals to send to your TV.

2 possible solutions:

1) If the modulator has a coaxial port labeled "Cable/Ant In" or something indicating "In" at a threaded coaxial port, connect your cable-programming to this instead of the to the VCR.

Depending on what type of modulator it is, when you want to switch from watching the VCR to watching cable-programming, you might have to push a button on the modulator to make the swtich, or you might not. Your modulator might put the VCR on channel 3, and allow the higher cable channels to filter though to their respective stations. Most cable providers will leave channels 2, 3 and 4 blank for this purpose. Try it and see.

2) Axe the modulator. Take it out of the system entirely. Connect your cable programming to the VCR "Cable/Ant In" and use another coaxial cable to go from the VCR's "Out to TV" port to the TV. When you want to switch from watching the VCR to watching cable, press a button on your VCR or the VCR's remote. Usually this button is labled, "TV/VCR."

If this does not help, write back and explain in more detail how your system is currently connected.

--axoplasm

connect the remote turn on any wire that goes hot when the ignition is tured on

Using your TV remote (not the cable remote) use the input/select button to swtich to videe 2 or ? ; this should allow DVD to work/ when done use remote input/select button and switch back to video

your tv is set to "Home Theater mode" . Use "menu" key on your remote, go to "advanced feature", then go to "use home theater" then hit "cancel" to return to standard mode. If this does not work try unplugging the tv for 4 hours to return to factory default settings

sounds like bad tuner