Here’s another Sega Saturn giving me trouble. This particular PAL machine powers on, but the CD drive makes some horrible noises and refuses to recognise discs. I’ve already tried adjusting the little orange trimpot on the laser assembly without success, so I think it’s time to replace the optical pickup.

Fortunately, I have a donor. Remember that Japanese Saturn with the completely deranged CD mechanism? Replacing its motor-driver chip didn’t fix anything, but perhaps the laser itself is still good. The two machines have different CD deck arrangements, including an ENR-011A designation on one of the mechanisms, although the laser assemblies appear to be identical.

Time to try swapping them.

First I removed the metal guide rail and disconnected the old laser from the PAL Saturn. I repeated the process with the Japanese donor deck, taking rather more care with the component I was hoping to keep. Naturally, my desk was covered in so much junk that finding enough room to work was almost as challenging as the repair itself.

With the donor laser fitted, I reconnected the ribbon cable and installed the guide rail and retaining clip. I also checked that the assembly could move along its intended path. Replacement Saturn lasers sometimes come with an antistatic solder bridge or without certain mounting pieces, so keeping parts from the original assembly can be useful.

I also spent some time discussing the laser-power trimpot. It’s worth remembering that increasing laser current can shorten the life of the pickup, and Sega treated this as a factory adjustment rather than a general repair procedure. A worn laser is better replaced than endlessly adjusted in the hope of squeezing a little more life out of it.

Anyway, back together goes the Saturn, and it’s time for a test.

Look at that. It’s detected a disc! Even better, it plays, and I can seek between tracks without the previous problems. Finally, one of my Saturn repair videos ends with something actually working.

The Japanese Saturn may still have a broken CD-control board, but at least its laser has helped get another machine going again. That’s a pretty good result, and I’ll happily take the win.

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