Close up shows battery is a 2032,so will get that battery before disassembling.Guess that here in 2019,that battery is over 10 years old and ready for replacement.

Go to Harbor Freight store.You will find suction cups that actual buyers used to remove Imac screens.They sell for $1.99 each and it’s easy to find 20% off coupons everywhere.

Have the same question as Clys.Wish I could know the correct gap measurement.I also used a credit card,which measured .9mm.Maybe 1mm is the correct gap.I know that if I contact Philips the chances of reaching anyone knowing anything would likely be impossible.If I bought a new brush,took it apart,that would be a way of finding out.

Same story.I contacted Philips and was told they reserved that part for warranty repairs.I told them I might buy a new one,take the part out and return for refund.I wonder how anyone would feel,if they bought a car and the company wouldn't supply a repair part,after warranty ran out and no one else made the part?