Would have to strongly disagree with you. It is not Yamaha themselves but the people involved with the servicing. Here in the UK we have excellent Technical support and repair service. We also don't appear to have the button problems either. I have spoken to a couple of dealers who have not heard of it.
The reality is one only finds out how good any service department is when you actually need to send your instrument back to them for repair. Yamaha Support staff wherever they are located represent Yamaha themselves, which is why they are very cautous in not admitting there's a fault whenever one speaks to them on the phone. The tech support gentlemen I spoke to 3 different times at Yamaha UK since last October all said they are aware of this erratic key behaviour on some 770/970 keyboards, and said you simply need to press the buttons on the outside (high point), and they work fine...in the meantime they assured me they were looking into the issue.
We most definitely do have this button issue on some keyboards in the UK, as you know yourself Eileen both I and Happy Jack who returned his 770 plus my neighbour are obviously in the UK, or at least we were the last time I looked,
plus a very large retailer in York, and you can guess who I mean has had 5 customers report the problem and I was told that quite some time ago by one of their staff, plus another dealer in Burton on Trent has also had complaints from a few customers regarding the buttons and has returned 3 boards to Yamaha for this problem.
I'm happy to name those 2 large dealers if you wish. Plus there is one local dealer who is aware of the issue because I demonstrated it to him on 2 keyboards they had in their showroom, so to say no UK dealers are aware is incorrect.
Also the original poster who started this thread is in the UK and had 2 boards changed for this issue, just because you don't have the issue as I stated previously to you Eileen, does not mean it does not exist, as some boards are definitely affected, even here in the UK, I can only assume the number of boards affected are quite small...I honestly don't know.
My own 970 like Joe.H's 970 is currently not doing it quite so often at present, does that mean all of a sudden the problem has disappeared entirely for everyone else that have the issue ? of course not. At the moment I can live with it, in fact I suspect this will remain a minor flaw on this 970 keyboard until such time I get rid of it, but it's not impacting my use or enjoyment of my 970 very much at the moment so like Joe it's something I'm tolerating and hoping that Yamaha at some point will acknowledge and put right in due course....fingers xxx. A view shared by others with the issue I suspect. In conclusion I like my 970, I think it's excellent other that this odd A-E/F/J button issue where it exits back to the main menu, albeit in my case not so frequently as it once did thanks to constructive help from other users like Joe.H who have experienced the issue themselves, and have shared information, so a big thanks to all those members who have shared information in this thread.
Best wishes.... Cameron