Can't change channels

I'd unplug/disconnect the Roku and after 30 seconds try the control button on the back. If you can change the input do so, then plug the Roku back in. Until you use the input button on the back to change input to Roku, you should be able to use the other buttons on the back to control the TV. If this does not work, unplug both the TV and the Roku. Wait maybe a minute, then plug the TV back in and follow the above instructions. Here are other alternatives: Using physical buttons: You can find the physical buttons on the left or right back side of the Hitachi TV. Using these keys, you can change the input, adjust the volume, or turn on Hitachi TV without a remote. Press the Input button located at the back or side of the Hitachi TV. The list of connected sources will appear on the TV screen12.

Using external devices: Connect a wireless keyboard or mouse to your Hitachi TV and change the input1.

Buy a universal remote: You can buy a universal remote to control your Hitachi TV and change the source.

First make sure that the current Source or Input is set to TV. This is usually the only reason for the error message you see. To select the source, look for a Source or Input button on the original remote. If you have an universal remote with a button with the Source/Input label, you may need to try alternative codes to make the button work. (Power and channel controls will often match across multiple codes for the TV manufacturer.) Alternatively, check if there is a Source/Input button on the TV or a section of the menu system with the function. Once you set this source, try again.

Note: there was a period when manufacturers sold some TVs without tuners. They were labeled HD-ready sets. These can't do a channel scan and do not have an RF antenna jack on the set.

I hope this helps. Please add a comment with the model number of your Hitachi TV for more information on setting the source on your set.

Cindy Wells

According to the specifications, https://www.cnet.com/products/hitachi-l32a403/specs/ , the Hitachi L32A403 has a digital (ATSC) and an analog (NTSC) tuner. Check if the input/source is set to TV. The signal strength information will only be available if you are using the digital tuner. This TV has an Input button on the TV and on the original remote. (It's the second from the bottom on the side of the TV, between the power and menu buttons. On the remote, the Input button is above and to the right of the arrow/Select keys. The Menu button is on the left side of the remote in that same line.) Press the Input button and then use the arrow keys to highlight the desired input; press Select to go to the input. On the TV the Channel Up/Down buttons are the same as the Up/Down arrows on the remote in this menu. The Volume keys will work as Left/Right.

Make sure to set the Channel Source to Air before attempting to scan for channels and check the signal strength. The Channel sub-menu is at the bottom of the list on the On-Screen Menu, after you press that button. However, this menu is not available if the input isn't TV. See the manual here: https://www.searspartsdirect.com/partsdirect/user-manuals/l32a403-hitachi-parts-manual .

Since digital signals are either enough to be seen by the tuner or give no signal, make sure that you use the best antenna appropriate for the distance and frequencies being broadcast in your area. Point the antenna in the correct direction. See http://www.antennaweb.org or http://www.tvfool.com for information on the stations near you. Antennaweb gives a very conservative list even though it assumes an external antenna.

I hope this helps.

Cindy Wells

You probably need to find a Source or Input button or menu item. Change the source from TV (if that is your current source) to A/V (or composite video). Depending on the model, there may be a source/input button on the TV. There will always be a sourc/input button on the original remote. If you are using a universal remote, you may need to try a different code to get the function to work.

On a few TVs, you can find this in one of the sub-menus. However not all TVs let you change the source in the Menu system.

I hope this helps. Please add a comment with the model of the HCI TV and whether you have the original remote or a universal remote to control the TV if you would like me to find the specific information for your TV.

Cindy Wells
(For example, the HCI RM22 III remote has the input button on the left side just below the power button.)

Good morning Cheri
try restarting the tv, just disconnect all electricity for 30-60 sec.
connect again. If that does not work, Try set- up on the menu, if you get the apparatus to obey you and leave the input mode.
If that does not work I always restart the router and "exchange"box,
enjoy your day
kolbrub

Your T.V. is programmed to store the last input you've selected. You have to manually switch it back to your T.V. channel input after each time you switch it to HDMI or any other input even when you turn it off. The "Source" or "Input" button on your original T.V. remote will change this.

sounds like a simple input problem, find the input button on the remote or the tv and change the source input until you get a picture,

On the right hand side of this television there are panel buttons. It appears that your son in law knocked the tv out of the correct input. Press the input button in order to cycle through the 5 inputs. Typically pressing the input button on the side panel of a television and pressing it again and again and again will make it change inputs. Universally the buttons on the tv panel function as follows: Channel up moves the cursor up. Channel down moves the cursor down. Volume + moves the cursor right. Volume - moves the cursor left.
Hope this helps

There should be buttons somewhere on the TV itself to switch input modes. Look around where the power button is located and see if there is a menu button you can access. Then use channel up/down and volume up/down to scroll thru modes to find input

Hope this helps
TankMurdock

using the menu button on the t.v. set an alarm for 1 min in the future. have the t.v change to channel 00 or the input channel @ that time. turn off the t.v and wait until the alarm turns the t.v on.