If you do it the same way as you did before, you should get the same result. If you did do exactly the same, and the result is different, we need to know quite a lot more:
1. What model TV?
2. What you did exactly?
3. What signal (analog/digital, OTA, cable, satellite)?
4. What channels (technical data like frequency) are missing and what channels do still appear?
5. Are you sure those missing channels are still available?
Have lost some channel's on my Samsung smart tv,have tried re tuning but still have lost channel's,can anyone help.cheers Lance

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