I changed the capacitor the other day as the red led was stuck on and everything worked for a day or so. I have now come home and the stb reads vu duo on its screen. I have no channels. I have turned it off and restarted it but still the same. I then took all the leads out of the back and left it for a hour then restated it but still it reads vu duo. Im not stuck as to wot to do. Any help please