The codes to try for Sylvania TVs are
0054 0030 0171.
The manual and codes are available from the One For All support site:
http://www.oneforall-na.com/remote.php?type=URC%203021 . The link for codes is at the bottom right of the page.
However, most remotes are limited to codes for devices released 6 months or more before the remote was programmed. If your TV is newer than your remote, then you may need to get a newer remote.
I hope this helps.
Cindy Wells
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