I lost my remote for my Dynex TV. Is there any way to change the video mode manually?

Pull out the wall plug for 15 minutes.

$16 for a new remote on Amazon

https://www.google.com/search?q=dynex+tv+dx-+42e250a12+replacement+remote+control

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What is the TV source (input)? Usually the captions are only controlled by the TV if your source is Antenna/Cable (using the RG-59/RG-6 cable input). If your source is a set-top box (HDMI, component or composite video), consult the documentation for that source.

If your source is set to TV, press Menu (on the remote or the side of the TV). Use the Left/Right arrows (or the Channel buttons on the TV) to select Settings and press Enter (input button on the TV). Use the Up/Down (or the volume on the TV) arrows to select Closed Captions and press Enter. The highlighted menu item should be CC Mode. Use the Left/Right arrows to choose Off. Press Enter to save the setting. Then press Menu to change another setting or Exit to leave the on-screen menu. See page 31 of the user manual available from ManualsLib here: https://www.manualslib.com/manual/445548/Dynex-Dx-19e220a12.html . The current link to the page is https://www.manualslib.com/manual/445548/Dynex-Dx-19e220a12.html?page=35#manual .

Some set-top boxes will have a caption control button on the remote control. Others have more difficult steps. On my IPTV box, I have to press Menu, select Settings, then enter a pass code provided by my provider. Then I enter the Hardware settings and find the closed captions menu under Audio Settings. On an old Dish receiver, the caption controls depended on the system mode. Since the receiver could serve a primary and secondary TV, captions could be viewed on the primary set or both. They could only be changed at the primary TV.

I hope this helps.

Cindy Wells

www.manualslib.com/manual/41505/Dynex-Dx-Lcd22-09.html?page=2#manual copy and paste this link here is your manual

Rick, dynex TV codes at links below. Check the attached links,instruction and guides, Good luck
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Dynex 32 inch Class LCD 720p 60Hz HDTV
Dynex Remote Codes
https://ca.answers.yahoo.com/question/index?qid=20081229074745AA4Jlgf
RCA Remote Code Search

Try unplugging the tv, push and hold the off/on button for 30 seconds. Replug and try.

Which Dynex TV do you have? The manuals for most Dynex TVs are available from the product page. Start at http://www.dynexproducts.com/products/televisions.html . If you have an older Dynex that isn't on the main list, check under Discontinued Products. Alternatively search for your model. Then click on the Support tab to find the manual for that model.

For at least one Dynex TV (DX-32L152A11), the procedure to scan for channels is below.
To scan for channels, first make sure that the current input is set to TV. (Press the input button on the TV or the remote). Then press Menu and use the left/right arrows to select TV. Then press Enter or down arrow (the manual says the right arrow). Use the up/down arrows to select the entry to change. First, make sure that the Tuner Mode (first item) is set to Air (use the left/right arrows to change this). Press Menu to go back to the TV menu. Then go down to Channel Scan and press Enter. You may need to confirm the channel scan and press Enter again. Wait for the scan to be completed.

On a discontinued model (DX-32L151A11), the procedure is slightly different. With the input set to TV, press Menu. Select the Channel submenu and press Enter or down arrow. Set the TV mode to Antenna (use the left/right arrows to change the value). Then press the up/down arrows to reach AutoScan. Press Enter. Move cursor to highlight Yes and press Enter again. Wait for the scan to be completed.

I hope this helps.

Cindy Wells
(There were some Dynex monitors built. They usually do not have a coaxial antenna in port since they didn't have tuners.)

These brands:
DYNEX, ORION, EMERSON, INSIGNIA, MEMOREX, SANSUI, SYLVANIA, and ZENITH
may use the same codes so look for those brands above in the Comcast remote codes listing.

Look in ur tv remote control for a button that said like VIEWMODE,P.sizes or Zoom buttons,pick one of these button fine a picture mode that fit ur tv screen.

dynex is bestbuy's product try emerson, mine is working with emerson codes