Code 9999 is the factory reset code. Your remote will be able to control the volume but it is the on-board volume setting of the STB itself, not the TV. It will not be able to turn the TV on and off either. If you want to try a different code for the slimline 2, try 0018 and 0017. These are common codes for Samsung and I've had luck with both. They are not listed on the remote support site last I checked.