Hi would there be anyone so kind and help me reset an old lady's Strong set box SRT3650. She

bought it new a few years ago. She some how has lost all the channels. She said it was going fine one morning, went out and later in the day turned it on and just got the notice no channels found. After no success of retuning them (even after a factory reset) I have bought it to my house and tried to retune it but still doing the same. It powers up fine and menu displays correctly. It searches…