Philips 9000 series - replacement heads for less than £15 and a clean.

My Philips 9000 series shaver warned me the heads needed replacing. So, let's find out how?
EDIT: Over a year later, the same set is still giving me a clean shave.
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Patreon
/ retroboxroom
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If you'd like to join my Discord Channel, you can join by clicking the following link discord.me/ret...
You could of course do with having the app - discordapp.com/ Discord is a place to chat with like minded people! After the app is install on your PC/Phone/Tablet, you can just use a webpage if you're away from your own devices.
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All company names mentioned, are theirs, I'm just mentioning them in passing!