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I actually happen to have a Seiki 55" Television.
My code is 10178 for a Cisco RNG 200, 150 or 100 box with the Dark Grey remote control with the word Xfinity (or Comcast) at the bottom.
Try that code first.
If this helps please mark my answer accordingly
PC's, phone, internet, or cable TV issues? I can help!
We do not have a listing of codes for a Seiki brand TV. Is it made by another company like Sony or Panasonic? If so, you can try those codes to see if they work. If it is its own brand, then you would need to search for the code on the remote. Press the TV button, then press and hold the Set button until the TV button blinks twice. Then press the numbers 991 followed by another 1 and the TV button should blink twice again. Press the gray power button at the top of the remote and then aim the remote at the TV. While aiming at the TV, press and release the channel + button, release, press, release. ... and so forth until the TV shuts off. Once it does, you should be able to hit the gray power button again and the TV should come back on. Please note, there are some TV brands that will not program to the Comcast remotes. In that case, you would still need to use your TV's own remote to turn it on and control the volume. I hope this information has been helpful.
Commercial service and installation technician, been with the company 8 years doing technical troubleshooting...
Press tv then press and hold setup, till it blinks 2 times
press 991 then press 1
Press the CH+ button slowly till the tv turns off
then press setup one more time to store the code....
If that fails go buy your self a harmony remote it will program your cable remote, tv remote and anything else you have ,