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Yamaha psr e463 with these black spotsI have a synth action keyboard which I'm planning to sell. As I'm cleaning my keyboard, I notice some black spots on it (possibly water spots??? I don't know how). Does anyone know what this exactly is and how I can remove them?

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    It would be helpful to have a photo showing the spots you're trying to clean. – Aaron Nov 3 '20 at 9:30
  • If that's plastic you can try acetone (no!! Do not do that, it's a joke). Have you tried something already? Like an humid tissue? Is it plastic? Wood? – Tom Nov 3 '20 at 10:03
  • I've tried just water, shampoo and water , a bit of white vinegar, dishwashing liquid with water .... nothings worked :( Yea, it's plastic – Ayush Roy Nov 3 '20 at 10:47
  • Where are the spots? All I notice is a natural(-looking) speck pattern on the plastic. For all I know, the keyboard arrived in the store this way. – Dekkadeci Nov 3 '20 at 12:23
  • Have you tried just rubbing the area with a dry microfiber cloth? Looks like the spotting I get when I accidentally get cleaning spray on an area and don’t wipe it off. – Todd Wilcox Nov 3 '20 at 13:05
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Yamaha keyboards of that type [PK/PSR etc] are usually painted plastic, certainly any metallic silver/grey sections - even the soft push-buttons.
I don't know of any that are intentionally patterned like that - but it's been 20 years since I worked there.

That looks to me like it's been sprayed or splashed with something that has actually damaged the paint surface, but not enough to go right through it [it's almost certainly black plastic underneath]. I very much doubt you could clean it off, it's already 'off'.

The entire top shell will be one single moulding, oversprayed in one single colour. Highlights would then be screen-printed over, or masked like the plexi-glass section you can see a hint of at the left, which is likely painted on the rear to give a high gloss face.

If the entire painted surface surface shows the same markings, it's an intentional pattern. If it's randomly varied over the surface, it's damaged.
I simply cannot tell from the pictures on https://uk.yamaha.com/en/products/musical_instruments/keyboards/portable_keyboards/psr-e463/index.html

This is what it looks like when it's worn off completely…

enter image description here

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  • As @ToddWilcox mentioned above, I do think it's cleaning spray spots. I've tried everything from shampoo to water to vinegar to dry cloth. Nothing's worked. So repainting it is my only option? – Ayush Roy Nov 3 '20 at 21:56
  • It can't be repainted. It's sprayed like a car, before it's assembled, before the screen printing & plexi are added. I think you're just going to have to accept it's damaged. – Tetsujin Nov 4 '20 at 6:55
  • Do you think it's going to significantly lower the valuation of the keyboard? It's pretty new and works very well. – Ayush Roy Nov 4 '20 at 8:25
  • It's going to affect it, for sure. New these seem to be about $£€ 280, 2nd hand 150 - idk how much someone would want off that for cosmetic damage, but valuations aren't my specialty. – Tetsujin Nov 4 '20 at 8:31

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