Yamaha DX7 SuperMAX unresponsive/uncontrollable keys.

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Yamaha DX7 SuperMAX unresponsive/uncontrollable keys.

Postby Glamourshots » Fri Aug 12, 2016 4:28 pm

Hey so I recently installed the SuperMAX board on my DX7. Was working great. And all of a sudden it froze up and completely started glitching out. Turned it off, was working fine for a bit then all of a sudden keys have become unresponsive and when they do come in, it sounds like the course filter is all the way up on every operator, so it produces a very loud and metallic sound for a second then will go back to normal. The thing is the person who installed the board with me bent a pin on the original chip so I can't take the superMAX out to see if it's an actual voice issue or if the board is damaged before I spend money on shipping it to a tech. Has anyone else dealt with this before? I reopened it and the board is still in place and all the soldering and connections looks to be good.
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Joined: Fri Aug 12, 2016 3:32 pm

Re: Yamaha DX7 SuperMAX unresponsive/uncontrollable keys.

Postby BLZProductions » Thu Oct 25, 2018 1:23 pm


Did you ever get to the bottom of this issue?

I'm having similar issues with a SuperMax. It's already been replaced once, and the replacement doesn't work.
Tried it in 2 different DX7s as well.


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Joined: Thu Oct 25, 2018 1:16 pm

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