Very annoying symptom is severe hum in audio, audible at the time of loading the program. This can not be zakwaliikować as a damage, but sometimes the noise and buzzing in the speaker does not allow you to specify the beginning of the recording. The reason for this lies in the excessive strengthening of the track audio cassette recorder. You can then disconnect the amplifier from the head by wylutowanie kondenasatora C10 and transistor Q3. Audio track scheme is shown in the following figure: Such a procedure completely deprive us, however, the possibility of eavesdropping tapes. To connect the stop output restored tapping (pin 8 an LM324) with the hole on the base of wylutowanego transistor through resistor value ok 200kW. This value can be changed to more when the eavesdropping is too loud, it depends on the individual preferences of the user. The other way is to Remaking the system so as to strengthen declined to ok. 100, as it is for example. in 1010 the tape recorder. You can end the emitter of the transistor Q3 and insert a resistor 1kW, which will reinforce the point. 10. A similar treatment would have to make the transistor Q4, wstawiajac resistor within the limits of 100W-470W. In the most common XC11 tape recorder (and virtually sole) damage is the interruption of the mass in the nearby housing. To remove the defect must be short-circuit pins 4 and 6 in a tape deck, or the corresponding points of the connector on the electronics plate. Also important is to keep the track belt (roller, axis, pędna, heads,).
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