That will probably be the fault.
But unlpug the motors to see if that helps.
The chips should not get hot with no load.

 

Chip also gets hot when only power is connected, nothing else.

 

So you recomment to change the cobtrol chip?

 

So you recomment to change the cobtrol chip?

Yes. If the motor driver is hot just sitting there, it is faulty I would think.