The Sony MZ-R500 (late 2001) is an MDLP-capable recorder powered by an AA battery. It's similar to many other models that were plastic and ran on AA batteries.
In this case, I received a model that worked fine, but wouldn't eject discs. When you pushed the eject button, the door would open, but the disc would just sit there instead of springing upwards/outwards.
Luckily, the MZ-R700 uses the same disc eject mechanism, and I was able to take a spring from a junk model (featured in a previous video) and replace the one that was missing.
Please watch the video for the walkthrough, but the steps are below:
- Remove bottom casing
- Remove top lid
- Disconnect flex cable for top lid
- Unscrew board
- Gently lift board until you see the spring location (bottom right corner)
- Replace spring (one end onto the frame, one onto the moving arm)