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If you need to replace your laser in the ps3. You have to open it up. Take out the disk drive, open that up and there you will find the model number
PlayStation Replacement Laser Deck KSM-440ACM – TO Video Game Supply
If you need to replace your laser in the ps3. You have to open it up. Take out the disk drive, open that up and there you will find the model number on the inside. Here are some pictures to help others out. : r/PS3
Amazon.com: New - Sony PS3 Laser Lens + Deck (KES-460A/ KES-460AAA/ KEM-460A/ KEM-460AAA) : Video Games
PS3 Slim Laser Replacement (CECH-2001A) - YouTube
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Where is laser lens model? : r/PS3
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Amazon.com: Original Blu-Ray DVD Drive Replacement KEM-450DAA KES-450D for Sony PlayStation 3 PS3 Slim CECH-3001A CECH-3001B With T8 Screwdriver : Electronics
PlayStation 3 - Wikipedia
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I'm thinking of buying a refurbished PS3 and I have questions about backwards compatibility and longevity. : r/PS3
Replacement Laser Lens For Sony PS3 Slim 160GB CECH-3001A KEM-450DAA KES-450DAA | eBay
PlayStation Replacement Laser Deck KSM-440ACM – TO Video Game Supply