Y and A not moving at same speed - Carve King

[cvan911]

Hi folks

Having issue with my Y and A not moving at the same speed on my carve king.  Y will move a full rotation, A moves a half rotation.  I saw other posts related to the topic and tried those steps but the didn't make a difference.

Troubleshooting tried 
Switched Y and A, and it reversed the issue to the other side, so I don't think it is the motor.
Drivers all really close to .65 or at it.
Replaced the driver on A, but it's doing the same thing.
Reseated jumpers under the driver.
Reseated jumper for Y.

Note - mill was functional, and then it wasn't.  Have had it since early November, order #10388.  I think I fried it with static while cleaning up.  Can I buy new electronics?  Or, perhaps something else I can try?

The following is the $$ command.
$0=10

$1=255

$2=0

$3=0

$4=0

$5=0

$6=0

$10=1

$11=0.010

$12=0.002

$13=0

$20=0

$21=0

$22=1

$23=0

$24=35.000

$25=1200.000

$26=94

$27=4.000

$30=12000

$31=0

$32=0

$100=200.000

$101=200.000

$102=200.000

$110=3500.000

$111=4400.000

$112=3000.000

$120=240.000

$121=240.000

$122=240.000

$130=432.000

$131=432.000

$132=95.000

ok

[Derek the Admin]

If I’m not mistaken the A and Y signals should be on the same bus when jumped. As such I doubt it is the Uno board. I would have just guessed it was the driver but it sounds like you already accounted for that. A new shield might be in order. PM me please with your name and we will take care of this.

Derek

[cvan911]

Thanks, Derek. Pm'd.

[cvan911]

New shield and steppers installed, and all is well. I first thought that A was moving at half speed, but with the new stuff installed, it looks like Y was moving at double speed.

[Derek the Admin]

Glad it's all worked out.

[longhouseco]

I’m having the same issue. Ran two different worked perfectly then all of a sudden it started going to weird places when I’d hit return to zero and then the A and Y started spinning at different rates or one wouldn’t spin at all.

[Derek the Admin]

The best test is to pull the Y and the A motor and observe them on the bench without a coupler on. Then see if they move in sync or not. That will identify if it's an electronics issue or not.

[longhouseco]

Feb 18, 2020 12:54:17 GMT Derek the Admin said:

The best test is to pull the Y and the A motor and observe them on the bench without a coupler on. Then see if they move in sync or not. That will identify if it's an electronics issue or not.

Pulled them out and one stops at random intervals and the other keeps going

[Derek the Admin]

Okay, thanks for the info. Last diagnostic, after which I think we can make a more precise determination: if you swap the purple drivers on Y and A, does the motor that is acting funny change or swap to the other?

[Derek the Admin]

Okay, thanks for the info. Last diagnostic, after which I think we can make a more precise determination: if you swap the purple drivers on Y and A, does the motor that is acting funny change or swap to the other?