Vintage Synth Repair

I was wondering if this message got posted.

Tracy


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On Tue, 4/3/18, adirondack_pc@... [vintagesynthrepair] <vintagesynthrepair@yahoogroups.com> wrote:

 Subject: [vintagesynthrepair] Yamaha DX7 Function Button Issue
 To: vintagesynthrepair@yahoogroups.com
 Date: Tuesday, April 3, 2018, 4:29 PM


  






  


       I just refurbished my Yamaha DX7 and everything is
 working A-OK, except for one thing...

 When I push the Function button and then select
 a number on the right, the number doesn't show up.  So,
 if I press Function and then 5, when the number was 1, it
 stays 1.
 
 I have done the
 internal tests and have passed.  My voltage is 2.8 - 2.9 -
 3.0 and it seems like someone updated the battery. 

 I moved the motherboard from
 another DX7 to my DX7 and before I did that, the same thing
 was happening.  Is there a wire, jumper, whatchamacallit
 out of place?

 The functions
 work as I go down the line, it's just that the number
 doesn't change.  Patches and other things all change
 their numbers and as has been said, the internal diagnostic
 passed the SW test, all the way to 32.  (I didn't know
 I had to do the buttons on the left.)

 I have reset it and have been all over the
 Internet looking for something on this, but no luck.  Any
 help would be appreciated!  1 small bugaboo and the darn
 thing would be as it was years ago.

 Thanks for your time.

 Tracy












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