Miele CVA 5065 coffee ends in drip tray

After 12 years (estimated 3-4 covers daily) in use, up to 50% of the coffee usually ends up in the drip tray. My research showed that this is probably due to the drainage valve. If I now replace the valve and disassemble the machine to this extent, should I do any other work such as replacing O-rings?

Thank you very much
, DerMichl

Hello, is
your machine working now?
What did you do to fix it?
Thank you for your answer.

Hi, I'm having this same issue.

I have taken then machine out and managed to disassemble the drainage valve and replace all the seals.

Unfortunately, the same problem still occurs.

Does anybody know what the issue is? I have recorded a video of what is happening inside of the machine.

Would times say that it is drainage valve you can buy under 20 € and change yourself.

Hello
, did you manage to solve the problem? I have the same problem and also changed the seals, but there is still the leak. If you could help me, I
would appreciate
it.