Hi Sparkies, newbie here needing some advice please
My 1100W SDS hammer drill sometimes starts, sometimes dead. So far fault diagnosis (loose connections, voltage and continuity checks) has ruled out switch, commutator and rotor armature windings. My suspicion has fallen on either the brushes and/or the capacitor. The brushes seem to be ok and both still have good spring pressure.
I have no direct way of measuring capacitance, but using the ohmmeter function on an analogue multimeter, I would expect to see a temporary deflection towards 0 ohms then back to infinity. But nothing across leads 1 and 2 or 2 and 3. There is a very minor flick across leads 1 and 3.
I could get a replacement capacitor for about £3.50, do the experts thinks this is my best bet.
Thanks in advance
My 1100W SDS hammer drill sometimes starts, sometimes dead. So far fault diagnosis (loose connections, voltage and continuity checks) has ruled out switch, commutator and rotor armature windings. My suspicion has fallen on either the brushes and/or the capacitor. The brushes seem to be ok and both still have good spring pressure.
I have no direct way of measuring capacitance, but using the ohmmeter function on an analogue multimeter, I would expect to see a temporary deflection towards 0 ohms then back to infinity. But nothing across leads 1 and 2 or 2 and 3. There is a very minor flick across leads 1 and 3.
I could get a replacement capacitor for about £3.50, do the experts thinks this is my best bet.
Thanks in advance