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White residue/corrosion on marantz faceplate?

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TrevorBarten

Well-Known Member
As the title suggests I am looking to figure out he I can get some weird corrosion/residue spots removed from marantz equipment I just purchased. I read around a bit and it seems that you should use some sort of polisher, but I figured I'd ask just to be safe.
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Maybe the owner was big into Brylcreem?

I haven't seen that before, I'd be really careful, start with something lite, like water with a tiny bit of soap and try on of the spots away from the lettering. I also use Simple Green a lot but again you have to be very careful around lettering or you'll wipe it right off.

I wonder if the equipment came from Florida and maybe they pulled the panels off of flooded equipment for parts resale?
 
Don't know about Marantz, but many aluminum faceplates were clear anodized for protection.
After many decades of exposure to humidity, moisture can work it's way under the anodizing and start corroding the aluminum, usually around the outer edge and edges of holes or other openings. Damage from aggressive cleaning or cleaning products also causes problems.
 
A poster with similar trouble tried WD40, seemed to fix it right up. Never tried it myself, YMMV.
 
Tromatic said:
A poster with similar trouble tried WD40, seemed to fix it right up. Never tried it myself, YMMV.
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Not sure how long this will last as I am not entirely conviced this is a permanent solution, however, it does seem to work quite well. It's not completely gone, but pretty much invisible now.

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I have used mothers mag polish. That seems to leave a residue though. To get the residue I've wrapped the faceplate up in a hot wet towel and let it sit for 10 minutes, then buff and rub with a paper towel. I would do this again on a 70's marantz if I needed, as Marantz seems to handle it. Something like Onkyo I would not, some brands are delicate and you can wipe the lettering right off.

If WD40 is working nice that seems like less work than Mothers Mag.
 
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