There are four codes for Sampo TV's in the UEIC device code library.
[Link: hifi-remote.com]

They are 0039, 0030, 0032, 0052
Don't expect these codes to work on your RCA remote, it's not a UEIC remote.

[Link: hifi-remote.com]
These codes are in the OneForAll Cinema 7 and the Radio Shack 15-1994. I highly recommend the 15-1994. Unfortunately, it's not on sale right now, so you'd have to pay roughly $40 instead of it's frequent $30 sale price.