Opel Zafira 1.9 CDTI 100-120 HP: MAGNETI MARELLI Throttle Repair, Error P1125, IC Overheating

Good morning, I am asking for help in repairing the MAGNETI MARELLI throttle for Opel, in this case specifically used in the Zafira 1.9 cdti 100 HP (they are the same in 120 HP). The error that the computer reads is: P1125 - Throttle actuator fault (62) - Present, for me it is manifested by: lighting up the indicator light with a key and an error (improper setting of the flap in the throttle) - I am lucky because it does not lose power, does not jerk, i can drive a car .
What I have determined/did so far during the tech/op-com throttle test, the electric motor does not close the throttle - it vibrates "as it would like to and cannot" (it is not mechanically blocked) it will move a few degrees and let go several times, it cannot close completely there must be no error.
For my part, I corrected all visible February, the hot air was an overheated IC, but it did not help ... unfortunately ....
The photo shows the internal electronics, in the frame I marked February (cold) which are the most common cause of problems with the throttle, but for me after opening they were ok.
There is a person on a well-known auction site who repairs such damage and gives a supposedly one-year warranty for the service, but the price of this service......
If anyone has an idea or has fixed a similar problem, please help or make a suggestion.
This white mass is quite flexible, I do not know how to scrape it and look for a fault / cold solder there?

Is there a regular commutator motor or some kind of BLDC?
Like an ordinary motor, it is worth trying it "for a short time", there may be a reason for it.

I haven't gotten to the motor yet, because it is "well" hidden and is held by a strong spring ..... but observing the behavior of the throttle flap during the closing test, it vibrates like a motor with brushes ending ... I thought about it too, but this announcement from aledrogo, in my opinion, excludes damage to the engine itself. I don't think you can get such a motor anywhere, and the guy from the ad claims that he repairs all throttles, so I would rather be heading towards electronics damage. I don't know, maybe I'm wrong....

ps
giving +12V for a "short" motor with a mechanical part works fine.

If the engine works well, there is still an encoder reading the current position of the throttle.

How is this encoder solved there? Because this "sunshine" from the paths on the plate in the picture looks hilarious

Above the "sun" is what is in the red frame, i.e. the encoder is not mechanically connected to the board, only a short distance above it. The yellow frames are the electrical connection of the motor with the electronics.

Dude did you find the bug? I'm asking because I have a similar problem with my car.

Regards