jea2

My stereo on my 01 gs430 went out and I ordered a used radio from ebay. After replacing with the new unit, I think it was from an GS300, the unit worked again except the backlight for the radio station portion did not work. I tried swapping out the front section from my original unit with the replacement unit and still had the same issue. Is this something that can be fixed with a new lcd or is it a wiring issue with the main body of the replacement stereo? Any advice is greatly appreciated.