radio/display problems

I think this has been discussed before, but not sure. Radio/sound system is intermittent. SID is intermittently hot to the touch and intermittently lacks bottom display line. Replaced ICE=no difference. "Black Panel" is associated symptom. Feature where headlights stay on till you get to door doesn't work. Other creature comforts seem OK. Grounds and fuses check out fine. Ideas? Is ICE resettable? Is SID all powerful? TIA Tom Trueb