Also applicable to the v10. Some philips are T8 and as one comment already said, they need to be long and thin for some screws - but otherwise a good guide. Step 1 should be remove battery. My dust cover over the circuit board had little retaining clips which made it feel stuck. The small connector attaching the red/white wires lifts out vertically, with a little retaining clip. The final step, I needed a large screw driver to push the trigger part out. I couldn't get the leverage with the shorter spudger.