Ive just had an audio system put into the 350 of which is amped with tweeters/components and sub but Ive an alternator noise coming through the system. Question is I had a tablet in prior to this and it worked fine using the torque app etc but now after this install its lcd screen shows many lines and is ghosty/misty not solid. Audio wise ive a silencer to fit to the rear of the HU to try and suppress the alt noise but could this cause the tablet screen issue, the touch screen still responds.