Shaver started making a loud vibrating noise from blade and foil
I tried changing the blade and foil but it still makes the same noise. When I removed the blade and tried running it it had a rattle in the top section.
Health & Beauty - Braun - Syncro 7526 Electric Shaver
Answers & Comments
Most likely, the drive unit needs replacing. You will find a drive unit at shaveroutlet.com. See link below
http://shaveroutlet.com/braun-7000-series-syncro-motor-drive-unit-p-110.html
To replace you will first need to gently pry off the 'cap' on the bottom that surrounds the hole where the cord plugs in. Once removed the side grips will pull off revealing 4 screws. Remove screws to take off back cover and access insides. Inner parts simply lift out