7i76D Spindle Analog output changed overnight!

Hi, This is a weird issue. For some reason analog output of the spindle of my 7i76D has changed overnight. It's roughly giving out twice the correct voltage at the low end and the error gets less at the top (10,000rpm)

This has worked fine since 2021 and I haven't touched any INI, HAL settings. Out of curiosity I measured the 10V power (which is bang on at 10.00V) and the output. If I command 1000rpm its giving out 2.1V which is way above. 0-10,000 rpm spindle (0-10V) It should be at around 1V @1000rpm right?
Never came across anything like this before. 

Is the digital potentiometer in the 7i76 failing? what should I do?

Check the VFD, probably set at 0-5V instead of 0-10V.

No. It's just as before. I Think you didn't get that it's voltage output that has changed. it's sending out 2V instead of 1V. This one has been untouched since 2021. Mesa card is acting up.

harindugamlath wrote:

I Think you didn't get that it's voltage output that has changed.

Oh i did, but being deprived of sleep for 3 days and having now slept for 11 hours is messing my head up badly, so i urgently need a coffee or two.
Sorry.

Let's wait for PCW I guess. There's no way I can get a replacement for this fast enough. If I can repair it it will be a great help.

Even in this fuzzy state i do not think it is the board, i have over 70 or 80 (probably more) of them in daily use for over 10 years and none ever failed nor any hiccups nor any issues ever.
I'll shut up now ...
Then again moisture does cause issues ...