The machine Kobelco SK-250 LC number LL09U029 series, has the problem that does not automatically accelerate and on the screen we get an error code which is step engine s / pt error. We review all looking for any cuts until the governor acceleration of the machine, but apparently everything works normally unless the machine does not automatically speeds, the force manually by accelerating and even work, we review the governor and it comes in the electrical system 4 wires only positive not negative current. Apparently there are problems with the controller, electrical mechanics have recommended change this component. In Bolivia there is no good backup post sales for this brand of equipment and also for solving the information is very basic, so we do not have to go comparing exact values and checking that all is well. It would help if I can work with any type of information more to finish this work. Also if I can provide information on where to buy the controller part number it LQ22E00065F1 not matter if it's new or used. Thanks!!
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