I know this is quite an old thread, but it looks like the question has been answered. Zraffleticket and rajhlinux have found that the diodes used in the BDR-209 drives are of Sony make. Here's the datasheet for those curious: https://datasheetspdf.com/pdf-file/905921/SonyCorporation/SLD3237VF/1
I'm glad this mystery has been solved after all those years!
I'm glad this mystery has been solved after all those years!
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