Noise on the radio during charging and during operation

It does not happen very often that I am with power cord shave because the battery is empty, but if so, our radio is now horrible, loud noise from. In the original power supply that was not the case and I have the effect with any other electrical device that is connected in the bathroom. Even if you have the razor only to load at the socket and the creaking noise is a bit quieter, but listening to the radio is not possible. I've never experienced so violent. Either this is extremely embarrassing for Philips or trade, but not to an original spare part. In case jederm shame and annoying. Unfortunately, I have noticed only after a few weeks. Too late to send back.