Hello, thank you for your answer, I am writing this post because in the years that Yamaha has been releasing PSR models and in which it has been possible to change its DM card or main board and there has been no problem, it was only in some previous models, it could be change the DM without any problem because everything else worked for him, screen, connectors, keys, buttons etc, the only option that did not work for him was the microphone, I'm talking exactly about the PSR line:
PSR-1000 | PSR-2000
PSR-1100 | PSR-2100, I attach photos of a PSR-2000 keyboard, with a PSR-1000 card and there was no problem, I did it myself and it was perfect, that's why I posted this post and seeing that here were 4 references, mostly the same for to be able to receive the DM and I see the same with the reference S770, S775, S970 and S975 I see the same casing that in the physical thing the only thing that changes is the VGA video output; and with the Yamaha PSR line if we go to the other references, it is useless to do what I am commenting on, because it is incompatible, or by screen, or connectors, here I place the references:
PSR-630 | PSR-730 Cannot
PSR-640 | PSR-740 Cannot
PSR-1000 | PSR--2000 | PSR-1100 | PSR-2100 DOES IT WORK
PSR-1500 | PSR-3000 Cannot
PSR-S700 | PSR-S900 Cannot
PSR-S710 | PSR-S910 Cannot
PSR-S750 | PSR-S950 Cannot
PSR-S770 | PSR-S775 | PSR-S970 | PSR-S975 It is where I have the doubt and I hope to clear it soon, say hello.
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