TexLex350

I just inherited my moms 2009 RX 350 and this exact same issue is happening. Out of the blue, the LED on the radio screen fades in and out and with the fade accompanies equivalent fade and on and off of the music playing. Happens in all modes, which tells me it’s strictly electrical or something relating to the computer/digital parts. This is a fairy Oder post so I’m wondering if anyone has found the magic answer. also this is for non-navigation and non Bluetooth model.