Suchergebnisse

Look at the circuit diagram. The 20v power supply comes from here, The problem is that the three oscillators got an electric shock of 20v, which is abnormal. The line icon says 11.2v, and I can't find the cause of the fault. O1CN01MPyAXW2C5mrbyN3LG_!!1518423.jpg O1CN01bXJsgb2C5mrX55z0Y_!!1518423.jpg

No matter how the position of Norm, FeCr, CrO2 and Metal fluctuates, the voltage is 20v, Switch contacts such as S3 and S4 are clean. The three and points of the oscillator are all 20v. O1CN01bXJsgb2C5mrX55z0Y_!!1518423.jpg

My machine recording is out of order and can't record. I checked the two arrow parts according to the drawing. The drawing shows that it is 11.2v, and the actual measurement is 20v. So I wonder if x908/x909 is faulty? Please tell me if my idea is correct. Thank you. O1CN01sDLsnc2C5mralaxt3_!!1518423.jpg

Hello, In the process of sorting out the saba CD360, I have a question: X906 2SC458 (CD) and X908 2SC458A (CD) These two triodes are both C458, and their difference is that they have different suffixes, Please ask: What's the difference between these two triodes? Can it be replaced with BC550C at the same time? O1CN01D44oCG2C5mrXU331d_!!1518423.jpg

Thanks for learning.

Hello, teacher. Is the saba cd936 made in Germany? I think this card holder has a lot of weight, and the workmanship is also good. Its quality is better than that of the CD360? O1CN01kHiILj2C5mrYspTYL_!!1518423.jpg

dl2jas, oldiefan, After several days of hard work, according to your instructions and the circuit diagram of the driver, we finally got results. You analyzed the cause of the fault very accurately and found that one of the transistors 2SD468 was broken. I bought two new transistors right away. After replacement, the problem was solved. Thanks to dl2jas and oldiefan for their advice for many times, which has given me the courage to be a radio enthusiast. I am a fan, but I lack radio maintenance s…

Ok Thank you. I will slowly find the fault according to your instructions Thanks again!

Press the play and ff keys, the motor does not move at all, and there is no response. Press the rew key normally.

The belt receiving pulley (right) does not rotate. The motor does not move, Press the (ff) and play keys, and the key action will stop immediately; The motor does not move. Rew the tape normally.

Thanks to dl2jas, oldiefan, and two friends for their advice. It is true that there is an error in the circuit diagram. I have checked it, Now my SABA CD360 is faulty: Rewind is normal, fast forward (ff) does not respond, play does not respond, press play or (ff), and the right wheel does not move or rotate. At present, I have replaced the BC550C for both the c1344 and c468, According to oldiefan's instructions, I have checked the contacts of all connecting lines and IC501-IC506, but the fault i…

Dear teachers, I asked a question: I didn't find the model of IC 503 on the circuit diagram of the saba cd360. A friend who asked for help told me that I didn't find the model of this IC on the circuit diagram. IC 503=? O1CN01DVezVv2C5mrIBjqli_!!1518423.jpg O1CN01Mw1gfq2C5mrMlVAht_!!1518423.jpg

Im FM-Tuner Modul und im ZF-Modul sollten es Tantal-Elkos sein, keine Al-Elektrolyt-Typen (HF-blocken!) Lassen Sie mich Ihnen eine Frage stellen: In FM-Tuner-Modul und ZF-Modul muss Tantal-Kondensator elkos verwendet werden. Kann stattdessen gewöhnlicher Aluminium-Elektrolytkondensator verwendet werden? Diese Frage ist sehr wichtig!

After I adjusted P512 and P516, the fault was removed, and 88-108 received the radio perfectly. Thank you for your advice! O1CN016JEhLP2C5mr2uEmwf_!!1518423.jpg O1CN01PaJoSK2C5mr2TpyrW_!!1518423.jpg O1CN01BLsf262C5mr0r8H1Y_!!1518423.jpg O1CN01AfZIGD2C5mqwNXgrS_!!1518423.jpg

Please measure the tuning voltage when the dial pointer is on 88 MHz and when it is on 104 MHz. Measurement Point A5. The voltage readings shall be 3 V and 22 V DC. The measurement result of A5 point is: when the dial pointer is at 88 MHz is 1.7v, 91.8MHz is 3.2v, and 108 MHz is 21.3v.

I report my work to the teacher: 1. All small electrolytic capacitors were replaced, 2. Replace all variable resistors, 3. All welding points on the circuit board shall be reinforced and welded again, 4. Check and adjust the voltage of all lines according to the circuit diagram, The current status is normal, the sound is very good, and the sensitivity is high, Only one problem has not been solved: FM/88-91MHz cannot receive radio stations. I don't know where to adjust. Please give me some sugges…

Hello oldiefan, kugel-balu， I have solved the problem of abnormal power supply and amplifier circuit of this 9140. Now I can start up normally and receive FM broadcast, The problems are as follows: 1. FM 98-108 can receive sound normally, and the sound is good; 88-98 radio stations are vague, or there are almost no radio stations. How can I solve this problem? 2. I have replaced the small electrolytic capacitor. thank you. O1CN017tcjWz2C5mr3hIC9s_!!1518423.jpg O1CN015J1DCS2C5mr0MSJCx_!!1518423.j…

Dear teachers, I bought a saba 9140 in ebay Germany and it arrived today. Unfortunately, it is missing a large knob and switch cap. Please ask teachers who have this knob+switch cap to transfer it to me and I will pay. thank you. O1CN01UiC2Yb2C5mqpKNo3v_!!1518423.jpg

Thank you for your advice, thank you!

Hello, my email: Thanks again.