crwdns2934241:0crwdne2934241:0 Bob the Bus

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CD's and DVD's ejected

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I have used a CD/DVD disc cleaner, it did see it once but then no more. 
I have not been able to load a CD/DVD for ages, it goes in but is just ejected. Anything else I can do, or does it have to be replaced?

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PowerBook G4 Aluminum 12" 867 MHz

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open