My Machine is a Heiz S1400 and until today it has been fairly trouble free, however during a cut today the x axis racked and stalled.

I have twin steppers on the X axis and at first i thought i had narrowed it down to one of these steppers, however on switching over the control cables and seing the propblem move from one x axis stepper to the other i then realised it was an output problem frm the control box.

I have taken the control box apart and the first thing i have noticed is what seems to be a circular crack in one of the driver chips TA8435HQ.

Is this likely to be the culprit ?, all 3 other chips seem intact

and if so does this need replacing with exactly the same chip as the others are TA8435HQ too.

i am assuming this will be a relatively simple soldering job, just desolder the old one and replace?

I will upload a picture of the chip in a minute