Op di 18 jan. 2022 om 13:23 schreef Bruce Wahler via groups.io
<bw@...>:
Frankly, I would be surprised if Yamaha used self-tapping screws on the DX7. They certainly didn't on my TX802. These screws are used in applications where it's unlikely that removal is required. Putting them back in without stripping the holes is tricky; even with care, they can't be removed more than a few times before loosening the hole.
My experience with taking apart 1980's synthesizers has been that
manufacturers use both self-tapping and tapped screws in the same
appliance. For example, plastic panels sometimes have integrated
plastic stand-offs that take a self-tapping screw.
Jacob
