tb6560 controller problem

[magicniner]

There is no "the tb6560 3-axis controller", there are dozens of the buggers knocked out by all and sundry in China! ;-)
Photos and links including product specific documentation will help the class address your questions. :D
You can buy the TBxxxx chips very cheaply, have you considered fixing your original board?

Another thing to consider when replacing a 3-axis board when one axis fails is to buy separates - a BOB and 3 single axis controllers + 1 spare, then when you pop an axis you have a swap out and/or can use working parts from one axis to identify the exact location of the fault on another,
Regards,
Nick