leadfoot

i pulled into my driveway and was about to turn off her off when the headunit went on the fritz. it's lighting up everything on the unit and when i turn the volume up or down the lighting just shifts. there's also a high pitched whine coming from the unit. my warranty is still good but was curious if anybody would know what's going on? i even started my car up again and it came back on the same way. i just don't want to drive half an hour to get a new unit if i can easily fix it myself.