HP 46 repair

[AndiGer]

Today I cut the leg of the 22 µF / 10 V rated cap and measured. The cap gave about 48 µF (VLoss 5.2%, ESR 2.2 Ohms). I by-passed it with a 22 µF 25 V (22.5 µF, VLoss 4.5%, ESR 7.6 Ohms) but motor still not spinning.

More findings:
If I switch on the calculator (only works with PRT OFF) and switch the printer on the motor spindle is attracted by a magnetic field and trembles in it but doesn't spin.

Another weird thing I found: The solenoids of the right-most 7 hammers (inside printer housing, not directy visible 4, outside at the bottom 3) attract and fire the hammers when the motor is turn by hand.
So I isolated the connector pins of these solenoids inside the connector with paper but the motor still not spinning.

As the printer from the Casio is printing I suspect no problem on the main board itself.

Edit: all diodes of the solenoids measure the same value. With my DMM 105 +/- 1. On the Casio I read 100 +/- 1.

Any ideas? Thank you