Did anyone have this problem? A strange film covers the play / record heads causing treble loss. I was try to remove this with isopropilic alcohol without results. What i need to remove this? Can i try with a electronic contacts spray cleaner? Greetings!
You might want to try a damp magic eraser. I think you would have more control with that than a pencil eraser.
The problem was solved with the zero residue circuit contact cleaner. Thank you very much to all, but is less agressive than pencil eraser. Greetings!