As I recall, the self-destruct device opens the case but bends some
plastic tabs. I recall being able to bend them back to restore the
self-destruct assembly to be able to reassemble the case. I do not know if
the case can even be opened without at least partially activating the
self-destruct device! And of course, 2 screws are hidden behind plugs.

In article ,
Christoph Bollig wrote:
Hi,

Here's the service manual.
http://63.230.9.155/braun/Srv_Man/SHAVER/

Thanks a lot. What a co-incidence! I dropped my brown shaver a few
months ago and it immediately stopped to do anything. After a short
unsuccessful attempt to open it, I gave up and used my old Gilette.

Today, I finally decided to do a google search to find any information
on how to open it before I have to buy new razor blades. And almost
the first link it gives me is this thread and the link to the service
manuals. That's far more than I expected!!!

scroll down to the PDF for the 5476. It appears to have some similarities
to my 4501-it appears to use one NiMH AA cell with solder tabs, and it
employs a self-destruct device for the casing when the shaver is being
thrown away (a one-way coin turning device around the power jack; see
manual). I was able to defeat this device and reassemble

Thanks for pointing this out. My 6510 (manual 5705) seems to have the
same. I didn't expect anything that nasty in there. I would have
probably turned the big coin screw as soon as I found it. I will try
to stay clear of it. The batteries are still fine anyway.

Now I only have to find the shaver again and I will try to see what's
broken tonight. I hope, it's just a cable which came off somewhere.

Christoph