Mesa 7I76EU TB2 not working right (TB3 works fine) – need help diagnosing

adhamamer wrote:

Im pretty confident that i did not cause this damage, all the wiring Ive done on tb2 was also done on tb3 to a standard tb6600 stepper driver
What do you guys think i should do?

I have no idea what do you expect from us to tell you as i am sure you do not want to deal with reality.
My reality is: I have over 80 or 90 of Mesa boards in daily use, never ever had one fail nor had issues, ever, mostly on industrial machines in use 24/7/365.
P.S.
This is my polite answer as you said "im pretty confident...".
Next time try to figure out how that happened instead of insisting it did not happen.
Also, whatever the price of any Mesa board is, i have to pay at least twice that to get theme here, and i pay that gladly.

Here's the thing, it may be difficult to tell what happened, but the card did not leave Mesa with
a blown  27 Ohm resistor network and a bad 74ACT541. Also, it is important to know what happened
so it does not happen again.

The good news is that the card is repairable. Mesa normally charges $35.00 for minor repairs like this.