I apologize if this is not the right forum to post a question on a variable speed switch in a cordless 19 volt Craftsman 1/2 drill switch.
Have a drill which suddenly runs only on full speed. Opened and find a transistor??? that is shorted on all three terminals. The numbers are almost impossible to read but have what looks like SK063 V6 in one row. It's mounted on an aluminum heat sink formed around the switch assembly. I'm wondering if it's a MOSFET like this: IRZ44N?
Can anyone point me to a typical circuit used in these switch applications? Or advise if I'm on the correct path? Should I replace the defective transistor with one listed above?
The batteries on this drill are long gone and not worth replacing. So it's wired to an to an external 18 volt battery in a permanent application on a sewing machine.
TIA
Have a drill which suddenly runs only on full speed. Opened and find a transistor??? that is shorted on all three terminals. The numbers are almost impossible to read but have what looks like SK063 V6 in one row. It's mounted on an aluminum heat sink formed around the switch assembly. I'm wondering if it's a MOSFET like this: IRZ44N?
Can anyone point me to a typical circuit used in these switch applications? Or advise if I'm on the correct path? Should I replace the defective transistor with one listed above?
The batteries on this drill are long gone and not worth replacing. So it's wired to an to an external 18 volt battery in a permanent application on a sewing machine.
TIA