Yamaha DX9

“Comes as seen
Powers on and may be working
but the only sounds I get are similar to old star trek computer sounds
all keys and benders work
display works and all buttons seem to be working
that computer like sound is the only sound I can get out of it
there is an added memory bank selector as seen – it does not change the sound
so I am not sure what it does – see internal pictures – you may know what it is
this unit has been modified and may need to be serviced to work correctly ”
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