Yamaha piano keyboard display fix bracket

Like many others, the display went out on my Yamaha MM6. This is apparently a common design defect caused by the LCD's ribbon cable not making great contact with the PCB.

This fixes the issue by clamping the ribbon cable to the PCB to provide enough pressure to fix the contacts. Not the most elegant fix, but is beats spending $130+ on a replacement OEM LCD that'll end up dying the same way.

I've had this fix in my keyboard for about 6 months now and it's held up great!

I did have to open it back up once ~2 months in because I was originally a little too skittish about pushing it on all the way (as seen in the photo.)

I printed mine with Inland PLA Red with no special print settings. I had to add a layer of electrical tape to the long side to increase the clamping force a bit.

My printer is a little janky, so I've included the OpenSCAD file in case you need to tweak things.

From what I've found, the same defective LCD design is also used in the Yamaha PSR-S500, PSR-S550, PSR-S650, MM8, DGX620, DGX630, and DGX640. The LCD assembly its self is known by the following Yamaha part numbers: WT98310, WG299100, WN744800, WU967500 and ZT859000.

Hope this helps you fix your keyboard too! ✨