iampoor1

Yamaha S90xs repair
« on: February 22, 2019, 07:09:52 AM »
Hello

Does anyone have a yamaha s90xs service manual, or expierence working on these?

Im currently working on one with a pretty bizarre issue.  With no keybed attached, on boot up, all the buttons will flash, boot the operating system, and then every single button turns red, and all the LEDs light up. However, the data encoder still works.

When I plug the keybed back in, none of the buttons/LEDs will turn on, and the encoder will not work.

I have tested all voltages at the power supply, and they are okay. I have also checked and reset every cable connection. I really have no idea how to proceed, and my sneaking suspicion is some issue on the main PCB. Any ideas on how to proceed, or has anyone seen this before?

Thanks!


pucho812

Re: Yamaha S90xs repair
« Reply #1 on: February 22, 2019, 11:17:12 AM »
You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is.

iampoor1

Re: Yamaha S90xs repair
« Reply #2 on: February 22, 2019, 02:37:58 PM »
try here


https://www.synthxl.com/yamaha-spx-90/

Its actually the s90xs, which is a keyboard. I do love a good ole' spx90 repair tho. Way easier to figure out whats going on then this beast!  ;D

pucho812

Re: Yamaha S90xs repair
« Reply #3 on: February 22, 2019, 03:29:41 PM »
You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is.


 

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