Thanks mate!

I contacted local Yamaha Rep, and they recommende factory reset. Done, nothing changed. Then they said about that 1000 $ board, they have to replace.

Then I contacted a technician working for a large distributor, really enhousiastic person. He says he will loo into it, it appears he can replace chips, program them, etc. He also said that even a small element, like a resistor, or condenser linking the chip to the… rest (sorry, I am a bassist LOL) can be the cause, like, a decalibrated piece can move things around, including those commands.

I will give it a try I guess…

Blorin Farbu - 20 March 2018 11:29 AM

Thanks mate!

You’re welcome.

 

Blorin Farbu -

I contacted local Yamaha Rep, and they recommende factory reset. Done, nothing changed.

A factory reset only restores User data (Voices, etc.), it will not affect firmware. (Otherwise, it would be necessary to reinstall an updated OS any time a reset was done.) That’s the reason I didn’t suggest doing a factory reset, and I can’t imagine why Yamaha though it would make a difference.

 

Blorin Farbu -

Then they said about that 1000 $ board, they have to replace.

Unfortunately, Yamaha doesn’t tend to repair boards, just replace them.

 

Blorin Farbu -

Then I contacted a technician working for a large distributor, really enhousiastic person. He says he will loo into it, it appears he can replace chips, program them, etc. He also said that even a small element, like a resistor, or condenser linking the chip to the… rest (sorry, I am a bassist LOL) can be the cause, like, a decalibrated piece can move things around, including those commands.

Yes, it’s possible, for example, for a capacitor ("condenser") that’s failing to affect relative timing of digital circuit operations. That can sometimes cause problems with how a computer boots - and the XF is basically a computer running Linux.

You’re lucky to find someone in your area who does repairs at the component level (as I do). Assuming the problem isn’t being caused by a bad capacitor, etc., if he has a means of properly programming a NOR flash chip while it’s removed from the XF, that could be a solution. Of course, he’d have to have the appropriate binary file, and I’m not sure that would be readily available.

 

Blorin Farbu -

I will give it a try I guess…

Best of luck. Please let us know the eventual outcome.