Ezviz CS-T30 - replacement of 16V 470µF capacitor, no diode, low output voltage

Symptoms: diode not illuminated, voltage at plug input 1.85 V.
Cause: faulty 16 V, 470 µF capacitor (does not hold voltage).
Remedy:
1. Remove the upper bezel by opening the housing with a flat screwdriver.
2. Remove the plastic button (switch).
3. Sensitively ream 4 holes in the housing around the 230 V pins with a 3 mm drill bit.
4. Knock the entire module out of the housing by hitting the pins with a pair of pliers - clamp the housing against the rim and hit two pins simultaneously with great force. Do not bend the 230 V contact plates.
5. Replace the 16 V, 470 µF capacitor.
6. Reassemble the whole unit in reverse order. Secure the upper frame (glue) so that the module is not pushed out when inserted into the socket.
CAUTION: on the movable earth element so that it does not touch the board and cause a short circuit.

A well-known problem, but any repair is worth showing. I described it like this:
How to fix a smart device that crunches, squeaks and makes strange noises?
Mega poor that you have to drill - most can be taken apart without this. E.g. classic LSPA9.
Socket died on factory firmware or after change?
More likely 470uF, not 460....

Yes, 470 µF. This is my second one, damaged in the same way, after 2 years - as you can see, factory defect. Soft original. The smart sockets, even when switched off but plugged in, give a low voltage at the output (plug input) - about 20 V.