Samsung, or any tv mfr for that matter will not help you if you entered the SM because in most cases, that will void your warranty because the "damage" was caused by you and thus not a failure of the tv. The SM is not meant for the user to access.
The values found in the SM are quite often model and build specific so even if you find a tv of the exact same model, region, and build the SM values may not be exactly the same because the firmware versions may be different. Using values and instructions that you find online is a very dangerous thing to do for the reasons I just gave. Entering the SM is one of the quickest ways to brick a tv.
A service manual may help but again, the values are not always universal. Good luck.