Cleaning Dyna PAS3 Style Face Plates

[Charles218]

I have several Dyna units that I want to clean up for possible sale, and need advice on how to safely clean the face plates. I'm looking at a PAS3, a couple of PAS4's, and a couple of FM tuners. I believe that all of the face plates were manufactured the same. What is the best method for getting these clean without destroying the lettering? I also want to make sure that I don't destroy the evenness the finish.

[Martin]

Coincidently, my little fleet of three PAS3s got cleaned up yesterday. I successfully used something called Goo-Gone Pro-Power, purchased at a local paint store, which did not disturb the lettering at all. Minor lettering disturbances did occur years ago when using seemingly benign dish detergent & water. Go figure.  I will attempt to post before & after photos to show the big difference made by cleaning. Be aware that I found the knobs on my PAS3X to have a slightly different type of plating than the earlier PAS3s and they shine-up much brighter. 

[Charles218]

I see a couple of different versions of this product, one is a gel and the other a liquid, which did you use? The closeup of the 3 looks really nice!!!

[Martin]

I used the liquid. It cleaned well, dissolved the accumulated grime and didn't disturb the lettering. Please test it first as your experience may vary! 

Following is the "after" picture. The one above was "before".  Note the PAS3X with very shiny knobs on bottom.  Prior to cleaning the finish looked the same, but the plating difference is readily apparent after cleaning (at least it is in-person).