Originally posted by Bill in Dayton:
He was able to pull up the service manual online with all the exploded views, part numbers, etc. If you ever get the opportunity to view this at your repair shop, its very cool. Every component is a hotlink to its individual replacement part.
He started with the switch test and as we expected, came upon an issue when he got to that area of the board. He then suspected a problem with one of the "SA data lines" based on continuity tests...
After more testing for continuity, he traced the problem back to the cpu chip.
He did make the comment that it was beneficial to him that I play a high end Yamaha. Apparently the way they configure their circuit boards make it tech friendly to find these problems. He said if it were a different brand, he would've found it, but it might have taken him longer.
Ditto to what Gary said as well. My wife calls me Noah because I have two of everything, lol...
Bill had your KB been LIONSTRAC MS you can change the motherboard ASROCK for about £35.00 UK, available at any PC shack near you. I think that Yamaha will be way ahead of the field with self diagnostic and testing, their vast KB numbers in the market WW will require it to be that way. Makes the engineers life easy and a spare part available overnight, see Skude about his soundboard, not certain he's got it yet, been waiting months!
Hope you get it fixed soon Bill.
Regards
[This message has been edited by Tony Hughes (edited 02-21-2010).]
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