I have assembled a mk160 and all was ok, but accidentally I do a shorcircuit and I dont find the component that fail.
the led doesnt light.
can any give some help to found what component (diode, capacitor, etc) could be spoiled?
Hard to tell without being able to examine the unit. Also depends on where the short has been made. Replacing all semiconductors (diodes, transistors, op-amp,… might be a good start, as they are very cheap.
If the unit still refuses to work, return PIC controller for inspection/exchange.