watersport202

My Lexus Premium Sound AMFM Cassette (with CD Changer in Glovebox) displays fine for the first 5-10 minutes of operation. Gradually some of the pixels start to gray out or dissappear. Has anyone else seen this problem? Is this more likely a bulb issue, a ribbon cable connector, or a bad LCD panel? If so, is it hard to get to to and to fix this problem? Thank you in advance for any light you can shed for this do-it-yourselfer.