Contact Roland directly
http://shop.rolandus.com/home/contact/614.0.1.1
Roland USA
5100 S. Eastern Ave.
Los Angeles, CA
90040
US
Phone: 323-890-3700
Fax: 323-721-4875
SOURCE: need rubber boot key contacts
Try wdgreenhill.com for the parts. They are in England but give great service and specialize in hard to find parts.
SOURCE: I have a 6 month old keyboard and have found that
Thisis hard to troubleshoot... The keyboard insynths are usually scanned as a matrix... If a disconnect diode has failed, then wrong notes can be triggered. There is USUALLY rows of the diodes on the circuit board where the keys hit. There are usually TWO contacts per key in order to sense key velocity. The lkey contacts are usually conductive rubber pills pressed against circuit traces under the keys. One sometimes needs to clean these contacts using 99% isoprophyl alcohol and Q tips.
I would do further testing of ALL combinations of notes played together to see if possibly any others show up as that could point to a particular failure.
SOURCE: We took our roland
The motherboard is probably not available... You haven't mentioned any symptoms of the problem you are having. Some service centers really don't want to be bothered and give up too easily.
SOURCE: roland fantom g8, problem, The last 2 octaves do
Read page 135 regarding the note range settings. Look also for keyboard split information. You may have the keyboard set to NOT play notes in the top octaves for the particular voice you are using.
SOURCE: need manual for roland kr-500 digital key board
You can find your manual here: http://www.rolandus.com/support/owners_manuals/k-n
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