Troubleshooting My Philips OneBlade does not perform as it used to There may be several reasons why your Philips OneBlade is not performing as well as it used to. Below we have listed the most common issues and what you can do to solve them. The blade is blocked by dirt Remove the blade and clean it thoroughly. The blade is worn As the blade is subject to wear, its performance decreases over time. With our blade wear indicator, you can now easily see if your blade needs replacement, once it turns green. The blade is damaged The blade is a delicate part of the Philips OneBlade and can easily be damaged. If the blade is damaged, it may no longer function optimally. Replace the blade with a new one.