Tefifon Holiday BK-59

Used Google translator

     Tefifon Holiday BK-59. Portable transistor player cartridges "Tefifon" with built-in tri-band radio VHF-MW-LW. Made in Germany, probably in 1960. Dimensions 30 x 22 x 12 cm. Weight 4 kg without batteries. Power is provided from 6 v batteries Pertrix 431, or AC power supply with built-in battery pack. The power supply is inserted in place of the battery and the back cover of the device has a hole for the cord. The front panel is the scale of the receiver, the volume knob, tone and frequency. Under the scale there are five buttons to control the states. In the upper left corner of the scale there is a round window in which the lamp lights when charging batteries. Under the upper lid is removable cartridge player. In the cartridge is endless plastic tape with the groove, as on the vinyl gramophone record. The tape tucked around the rubber roller of large diameter. When you switch to playback the tape summarizes two additional guide roller and the needle head crystal pickup. The tape is moving in a clockwise direction with a velocity 19.05 cm/sec, and the needle pickup moves from the upper to the lower edge of the tape. The top panel next to the pickup arm is the operation of the regulator, dial gauge and the needle pickup. Wiring collected at 9 transistor OC170 (2 pcs.), OC170R (1 pc.), OC171V (1 pc.), OC171M (1 pc.), OC71 (1 pc.), OC74 (2 pcs.), OC75 (1 pc.). Transistors OC71, OC74 and OC75 are used in low-frequency amplifier. It is also possible to use the amplifier transistor GFT20, GFT21 and GFT32. For more information on Tefifon BK-59 can be found here.
      The device has got me out of whack, and the repair will probably difficult. After the repair will talk about the quality of work, and so on.

Photos can be enlarged

The sizes of a cartridge 113 х 97 х 50 mm. Weight of 140. Width of a tape of 16 mm.

Kinematics and the mechanism of a sound pickup

The wiring diagram is collected on printed-circuit-boards and with the help of hinged installation

Wiring diagram Tefifon Holiday BK-59 and other documentation