2006 back-up died / then the MFD

About a year ago, the back-up camera on my 2006 starts fritzing. First, every so often, the image would jiggle side to side. That happened occasionally for months. Then, every so often, it would just be static, no image. This became more frequent over the course of a couple months and then every so often it would just be black. This became more frequent to the point that every time I backed up, it was a crap shoot: normal, jiggle, static, or black? Finally, it went black all the time. Once every few months, it will come on as normal. The next time, back to black. I've got 53k miles on it so by the time I took it in, it was past warranty and the dealer wanted $600 to replace it despite the fact that I told him it must be wiring.

So I just got used to not having a backup camera.

Now, the MFD has done the same thing at a much faster pace. It went blank a couple times when I turned on the air, then came back on the next time I started the car. Then it was 50/50 that when I started the car it would come on at all. Then it went permanently blank. The radio/CD still works. The bluetooth still connects to my phone, but I can't talk/hear through the speakerphone. The air/temp buttons on the steering wheel still work.

I know there are a lot of threads about this, but most of them are the '04 MFD Service Bulletin type. I can't find anything like this.

Does anyone have any advice?

Thanks