Well, samsung has a dealer shop right next to the nakumatt lifestyle,, take it back to shop you bought - and they will take it back to samsung ...
Giving a kawaida fundi will mess it up cos nowardays things are digital, and for most problems, only the manufacturer has the restoration programs
(unless the fundis can reprogram the micro controllers )

Sometimes you dont even need to be within the warranty period - just talk nicely to the guys responsible for collecting faulty products then the two [or three] of you can sort it out kando once the electronic piece is back and functioning well...


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Why am I mentioning this last part ? Because unless the shop owners tell the brand dealers that the warranty is void, they will never know, these things are taken in bulk, repaired in bulk and returned in bulk