> Bob,
>
> I agree with Pianobench's comments in his response to you. This is
> definitely a problem that a qualified Yamaha technician should be able
> to solve. The behavior that you are seeing is not normal for the Mark
> IV and I do not see this at all on my DC3M4t.
>
> I can understand your desire to protect your Mark IV from electrical
> surges, but I don't think that plugging in and unplugging the Mark IV
> frequently (which requires the Mark IV to reboot each time it is used)
> is the solution. I would strongly suggest that you purchase a good
> UPS which will protect your Mark IV from power surges, plug the Mark
> IV into a battery backed up outlet on the UPS, and when you have
> finished playing the Mark IV, place it into the sleep mode (green
> light dimmed) and leave it in that state. This will be, over the long
> haul, much easier on your Mark IV than the constant booting and
> rebooting.
>
> I have my Mark IV plugged into a good UPS and I cannot imagine owning
> this instrument without protecting it from power surges with a UPS.
>
> Tom
>
> Bob Colopy wrote:
>
>> Tom,
>>
>> I'm not a pianist just love the piano and so play midi files. The
>> last 4 or 5 times I have had company over it has spoiled my
>> "show-off" performance by playing F below middle C randomly and much
>> louder than the rest of the piece during playback - no matter what
>> files I use, including the pieces that come with the piano. However,
>> I can correct the problem by rebooting the system and being very
>> careful on the timing of when I turn on the small remote. But usually
>> when company comes I'm busy hosting so cannot wait and watch for the
>> precise second or two after the green light is on solid and before it
>> dims. If I miss that time slot it does its random note thing which of
>> course is embarrassing for me when trying to demonstrate how great
>> the piano is.
>>
>> I called technical support who have been excellent. They said it is
>> like any computer even though this is running the Lynx system. When
>> have problems, just reboot. Usually I don't have time with company so
>> just hope they don't notice the random notes but sometimes it is so
>> obvious and I have to explain what happened and that it is not normal
>> e.g. I didn't follow the precise timing on turning on the remote. If
>> I'm the only one with this problem then probably it is not the
>> computer but something to do with cross talk to that particular
>> solenoid. But if that is the case then how come I can avoid the
>> random notes with precise timing when turning on the remote?
>>
>> I normally keep this expensive piano unplugged so there is no chance
>> that lightning could damage the electronics. It is only plugged in
>> just before I use it - don't know if that has any bearing on it.
>>
>> Thank you,
>>
>> Bob
>>
>>
>
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