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Matrix 6 lever malfunctions

Matrix 6 lever malfunctions

2016-01-07 by jvnsmail@...

Just got an M-6 and it has a crazy pitch lever - extremely sensitive or completely unresponsive, seemingly randomly. Sometimes a pitch bend will stick and set the board out of tune. Thinking a dirty pot to blame, jumpered another across the wires and got the same behavior. Anybody have an idea what could be the problem here?
Oh yeah, and the mod lever doesn't work at all. :(
Thanks,
JV


Re: [oberheim] Matrix 6 lever malfunctions

2016-01-07 by Dave Garfield

Matrix-6s are prone to wonky levers.  As for the Pitch Bend, one of the things that I found which helps immensely is to go to the MASTER menu, item #52, or CALIBRATE.  I work my PB lever back and forth a couple of times, letting it self-center, then do the READY? / YES on the keypad.  Doing the calibration routine sets the VCFs' response, Pulse Widths, some other functions... and the Pitch Bend lever's response. You may have to do the CALIBRATE routine a couple of times, but it should at least help a bit.As to the MOD lever, I'd bet that it could be mechanical.  Perhaps the lever isn't rotating the MOD pot's shaft, or it may be a broken wire or a dirty or loose connector, or a bad solder joint.Best of luck with your upcoming detective work!Dave Garfield 

    On Wednesday, January 6, 2016 9:30 PM, "jvnsmail@... [oberheim]" <oberheim@yahoogroups.com> wrote:
 

     Just got an M-6 and it has a crazy pitch lever - extremely sensitive or completely unresponsive, seemingly randomly.  Sometimes a pitch bend will stick and set the board out of tune.  Thinking a dirty pot to blame, jumpered another across the wires and got the same behavior.  Anybody have an idea what could be the problem here?
Oh yeah, and the mod lever doesn't work at all.  :(
Thanks,
JV

Re: [oberheim] Matrix 6 lever malfunctions

2016-01-07 by John Leimseider

Also, a good reason to have 2.13 A rather than anything earlier. The A version increased the dead band on the pitch lever in software. There were also ECOs about this problem...

Sent from my iPad

On Jan 6, 2016, at 9:54 PM, Dave Garfield daveogarf@...<mailto:daveogarf@...> [oberheim] <oberheim@yahoogroups.com<mailto:oberheim@yahoogroups.com>> wrote:



Matrix-6s are prone to wonky levers.
As for the Pitch Bend, one of the things that I found which helps immensely is to go to the MASTER menu, item #52, or CALIBRATE.  I work my PB lever back and forth a couple of times, letting it self-center, then do the READY? / YES on the keypad.  Doing the calibration routine sets the VCFs' response, Pulse Widths, some other functions... and the Pitch Bend lever's response. You may have to do the CALIBRATE routine a couple of times, but it should at least help a bit.
As to the MOD lever, I'd bet that it could be mechanical.  Perhaps the lever isn't rotating the MOD pot's shaft, or it may be a broken wire or a dirty or loose connector, or a bad solder joint.
Best of l uck with your upcoming detective work!
Dave Garfield


On Wednesday, January 6, 2016 9:30 PM, "jvnsmail@...<mailto:jvnsmail@...> [oberheim]" <oberheim@yahoogroups.com<mailto:oberheim@yahoogroups.com>> wrote:



Just got an M-6 and it has a crazy pitch lever - extremely sensitive or completely unresponsive, seemingly randomly.  Sometimes a pitch bend will stick and set the board out of tune.  Thinking a dirty pot to blame, jumpered another across the wires and got the same behavior.  Anybody have an idea what could be the problem here?
Oh yeah, and the mod lever doesn't work at all.  :(
Thanks,
JV

Re: [oberheim] Matrix 6 lever malfunctions

2016-01-07 by Jill Saphic

sad... that's why I sold my newest Matrix-6 to a friend.I even had the post replaced on the PB lever.it NEVER went perfectly back to "O" when I let off the lever when bending.The Mod wasn't as bad, but still a bit of VIB left sometimes after I would let itspring back to unity.good luck!
 

    On Wednesday, 6 January 2016, 20:59, "John Leimseider john.leimseider@... [oberheim]" <oberheim@yahoogroups.com> wrote:
 

     Also, a good reason to have 2.13 A rather than anything earlier. The A version increased the dead band on the pitch lever in software. There were also ECOs about this problem...

Sent from my iPad
On Jan 6, 2016, at 9:54 PM, Dave Garfield daveogarf@... [oberheim] <oberheim@yahoogroups.com> wrote:


 Matrix-6s are prone to wonky levers.  As for the Pitch Bend, one of the things that I found which helps immensely is to go to the MASTER menu, item #52, or CALIBRATE.  I work my PB lever back and forth a couple of times, letting it self-center, then do the READY? / YES on the keypad.  Doing the calibration routine sets the VCFs' response, Pulse Widths, some other functions... and the Pitch Bend lever's response. You may have to do the CALIBRATE routine a couple of times, but it should at least help a bit.As to the MOD lever, I'd bet that it could be mechanical.  Perhaps the lever isn't rotating the MOD pot's shaft, or it may be a broken wire or a dirty or loose connector, or a bad solder joint.Best of l uck with your upcoming detective work!Dave Garfield

On Wednesday, January 6, 2016 9:30 PM, "jvnsmail@... [oberheim]" <oberheim@yahoogroups.com> wrote:


 Just got an M-6 and it has a crazy pitch lever - extremely sensitive or completely unresponsive, seemingly randomly.  Sometimes a pitch bend will stick and set the board out of tune.  Thinking a dirty pot to blame, jumpered another across the wires and got the same behavior.  Anybody have an idea what could be the problem here?
Oh yeah, and the mod lever doesn't work at all.  :(
Thanks,
JV

Re: [oberheim] Matrix 6 lever malfunctions

2016-02-18 by jvnsmail@...

Thanks for the replies, all... sorry for the delayed update - I forgot all about this once it was fixed!
As Dave Garfield suggested, CALIBRATE did the trick and put everything in proper working order - but not before i'd spent some time disconnecting/reconnecting all wires and extracting/reseating all the socketed ICs. So the lessons i learned were: 1) the calibration routine doesn't just tune the oscs, it also puts other things in order; and 2) it's easier to run the calibration routine in 10 seconds than to take the synth apart in an hour looking for bad or dirty connections. End result: AWESOME! Just like i knew it would be. Thanks all!

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