Can I repair scratches on a Blu-ray myself?

"Scratches prevent de laser from reading the disc correctly. When the scratches are only superficial it is possible to repair them yourself by polishing the disc with a slightly abrasive compound. Ideally you use a professional abrasive compound but it’s also possible to use regular toothpaste. After polishing the disc it needs to be washed and let to dry. There are specialised businesses that can do this."

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