Very weird CDR-23 / electrical gremlin

[xxaarraa]

Hey guys,

I am encountering a very weird CDR-23 gremlin and hoping for some ideas. Here's the situation:

Last night, while cleaning my bookshelf at home, I found a bunch of old CDs and figured, hey, I should play some of the tunes before I toss them. I went to the porsche, loaded 4 of these CDs into the odd-duck cd-changer/stacker in the center console, stuck one in the main CD slot and fired up the stereo. Nothing played. I then realized that the old CDR-23 may not play MP3s, (didn't even occur to me and these are the times I am reminded of truly how old this car is - 2003). I popped it out and threw the CD's away.

Then this morning while going to work, I took a call from my dad and the Motorola IHF1700 handsfree kit I have wired right into the CDR-23 and car speakers played the audio very weird. It kept going up and down in static interference, but that as well as the radio worked. I didn't think much of it.

I then get back in the car on the way back from work and fire up the CDR-23 and problems begin. It never boots out of "Porsche" screen. I restarted the car and same. I then hit the "CDS" button a few times and lo and behold, the FM starts playing again. But however, the IHF1700 now does not play any audio via the car speakers.

I disconnected the negative battery terminal when I got home and let it sit for 10 minutes, reconnected and same. Stereo fires up, but IHF cannot play via the car speakers. It connects and pairs to my phone just fine, the stereo even says "Phone" when I use the phone, but just no audio.

Before I rip apart the head unit and start checking stuff, wanted to see if anyone had any ideas here. Much much appreciated guys, thanks in advance.