here's my story
First of all, thanks to all of you for your input, without which I wouldn't even have attempted this job.
The display on my radio used to flicker randomly, so I took it to Ford during my warranty period and they replaced it. Or so they said. I do NOT believe it. Soon thereafter, my warranty expired and the display completely died.
I cleaned out the power board using a toothbrush and rubbing alcohol but that didn't help. Then I carefully looked at all solder joints and saw that two joints on the display/faceplate board had fused and the solder had gotten crusty/brown/black. I cleaned that area out with rubbing alcohol and a cotton swab. Then I soldered the two points (they were very close together), making sure they don't make contact.
Voila! The radio display is BACK!! Having said that, I don't know how long it'll last mainly because my soldering job was poor. I read up on soldering and it says I should heat the surfaces, then apply solder. How do you heat pinprick points on a curcuit board without burning the board?? I used a 30watt soldering iron with 0.016mm resin-core solder but had a really hard time with it. It would just bead up. After several tries, I was able to do a half-assed job on the display board. The heat shield joints weren't bad because they're not so minute. Oh yes, I took the heat shield off, to clean the other side of the board with rubbing alcohol.
SO, two things:
1. Can somebody tell me how to solder these boards?
2. I think everyone's case isn't exactly the same. The solder points could be bad/broken/fused ANYWHERE on the boards. One should thorughly examine the boards under a good light to see what the offending point(s) may be.
THANKS TO YOU ALL FOR MAKING THIS POSSIBLE FOR ME