Sony SL-C5 Betamax capstan servo issue FIXED!

[@patarrota1986]

me alegro mucho que lo hayas podido reparar

[@MrBetaByte]

¡Tuve mucha suerte de tener el chip de una placa vieja, de lo contrario me habría quedado muy atascado! Very lucky I had the chip from an old board otherwise I would have been very stuck!

[@patarrota1986]

@@MrBetaByte me alegro mucho yo voy buscando el video betamax sony sl hf950 tu vendes alguno

[@MrBetaByte]

@@patarrota1986 Not at the moment but I soon will have.

[@patarrota1986]

@@MrBetaByte lo siento mucho saludos desde España

[@KylesDigitalLab]

I have the same issue on my JVC GR-C1 VHS-C camcorder, it plays tapes way too fast like it's in picture search and there are noise bars in the picture. It's not as bad as this one. The unit was working fine before I reassembled it and I even made a test recording successfully. Could it just be a dirty control head?

[@MrBetaByte]

What springs to mind is either is the pinch roller engaged properly in playback and is the capstan flywheel sensor plugged in? Interested to see how you get on.

[@TTVEaGMXde]

Given the high-resistance environment of the servo IC, I wouldn't care about the internal resistance of the capacitors. This means you can also replace tantalum capacitors (nowadays about 0.1-0.5 ohms) with low ESR electrolytic capacitors, ceramic multilayer capacitors or cheap film capacitors, and you don't need 2 tantalum capacitors to simulate a bipolar electrolytic capacitor. But you shouldn't ignore transistors either, because when you look at the minimum amplification factors, I'm surprised that the circuits always run. But I don't know whether SONY provides sufficient transistors without extra marking of the gain factor or whether it depends on it in the final test. In any case, I find 80 as the minimum amplification factor between two “independent” video stages rather economical.

[@MrBetaByte]

All good points and something I'll cover at some point in my journey with these machines. Thank you as ever. 😊

[@mohamadmohamad9591]

😮

[@MrBetaByte]

😊