drummerman said:
Yes. It is an old watch makers trick to polish out scratches and I've used it in the past on Swatches which use a plastic crystal.
http://www.clickcleaning.co.uk/Products/315/Brasso-Wadding-75g.aspx?option=526&utm_source=googlebase&utm_medium=shoppingfeed&gclid=CP_SppC70LMCFU3HtAodRxgAXQ
Takes a bit of elbow grease and has a habit of getting into nooks and crannies so I'd advise to either take the display cover out if you can or tape off the edges.
regards
Kudos to you Drummerman, worked wonders on my Marantz....the change is quite unbelievable. I also used brasso on my watches and they look great too. I did use contact cleaner after brasso and it seems to add some shine to it.