Philips - RK50 - EL 3522/24a Portable tape recorder

Philips tape recorder
RK40 EL3522/22b

All faulty WIMA film capacitors (Tropydur, brown) have been replaced.
3 x 100nF/400V, axial,
1 100nF/250V, axial
3 x 22nF/400V, axial

Replaced defective electrolytic capacitors.
2 x 100µF/25V, axial/radial.
1 10µF/25V, ax
Power supply filter electrolytic capacitor tested: still okay.
Three faulty carbon composition resistors were found. The remaining ones are still within tolerance.
The equalization switch works unreliably.
Troubleshooting: sulfated contacts cleaned, actuation linkage readjusted.
Band shutdown does not work. Activation pin was glued to the switch replacement. The counting mechanism drive belt has been replaced.

The magical tape lights up and the motor turns. The tape recorder plays the inserted tape.
Both coils are not part of the offer and are only installed to show that the motor is turning.
Device is still sold as defective, for parts, or for hobbyists.
Device is sold including all tubes, see the last photo. The housing shows age-appropriate signs, scratches, and material fatigue in the form of cracks. Please refer to the pictures to assess the condition of the device.

Country: Germany
Manufacturer / Brand: Philips Radios - Germany
Year: approximately 1960 - 1962
Category: Sound storage device or player

Number of tubes: 7
Tubes: 2x EF86, 3x ECC83, 1x EL84, 1x EM84
Operation mode / Volts: AC power supply / 110, 127, 220, 245 Volts
Speaker: dynamic speaker, no excitation coil (permanently dynamic) / 11cm 4.3 inch
Power 3.5W
Material: leather / fabric / plastic / canvas over various materials

Form: desktop device - landscape orientation
Dimensions (WHD): 400 x 220 x 330 mm / 15.7 x 8.7 x 13 inches
Note: 4-track device, tape speeds: 4.75/9.5/19 cm/sec, coil diameter 18 cm.
Net weight: 13.5 kg / 29 lb 11.8 oz (29.736 lb)