I cannot find a code to program my direct TV to my supersonic flatscreen TV Who manufactures these televisions?

If you have a universal remote control, you can set it up to be compatible with your Supersonic TV or JEBSON 3003ES device. Follow the instructions included with your universal remote to program it for use with your particular television or device

Go to your cable company for that info. They are charging you plenty for the service so give them a chance to earn some of that money.

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Hello
Four digit universal remote code for Supersonic TV/DVD combo is:
0944
Direct Code Entry

1. Press and hold the SETUP button until the red indicator stays on, then release the SETUP button.
2. Press and release the desired Mode button (TV, VCR, etc.). The red indicator blinks, then stays lit.
3. Enter the 4 digit code from the code tables. Note: after a valid code entry, the red indicator turns off. For an invalid code, the red indicator flashes.
4. With your device on, press CHANNEL UP. If the device responds, no further programming is required. Note: If some buttons do not operate your device, try one of the other codes for your brand

Ask the remote code search engine. They will figure it out for you.

if supersonic is not listed in the codes section manual of the rca. then you have to program it manually.

Codes are bound to the remote, not your set so the model of remote is required and none of the so-called 'universal' remotes really are.
I wish someone would bring a suit against any of these manufacturers using the term 'universal.'
At best, they are 'multibrand' and, with the proliferation of 'brands,' there never will be one that can rightfully claim to be 'universal.'
There may never be a code for your brand available in every remote.

The manufacturer for this television is Sylvania, the standard codes for TV/DVD combos will work just fine.

ask the remote code search engine.

What type universal remote do you have? Try searching online for the manufactures site they should have information on the sequence to program as well as the various code for any given brand of TV. Often the model number is located in the battery compartment on universal remotes if it's not printed on the exterior.