Der Verkäufer ist für dieses Inserat und dessen Inhalte verantwortlich.
JVC Victor TT-101
Preis: 3.500,00 €
| Gebrauchtgerät
Produktdetails
- Produktgruppe
- Plattenspieler-Laufwerk
- Hersteller
- JVC
- Funktion
- einwandfrei
- Alter
- 24 Jahre 6 Monate Nach Schätzung
- Gebrauchszustand
- gebraucht
- Optik
- Gebrauchsspuren
- Zubehör
- fast komplett
- Farbe
- grey/silver
- Neupreis
- 5.500,00 €
- Preis
- 3.500,00 €
- Weitere Informationen
- http://www.jvc.de
Beschreibung
A completely restored JVC Victor TT-101, one of the best direct drives of the golden Japanese age. We had to work on many issues. Power transistors were defect. Signal distortion and failure was the result. In the end all power transistors had to be replaced with new ones. Also the main processor for steering the motor was deficient. They got no 100Hz reference signal which is absolutely essential. Using a substitution circuit (with limited functionality) it was possible to start a simulation process thus allowing to work further on the electronic issues
My two very experienced techs of Audio-Technik in my home town had to repair several defects, in total 22:
they couldn’t get a reliable speed indicator signal from the motor. Therefore the motor was taken apart and maintained. A signal grommet which is affecting the resonance signal (rotation speed clock) new positioned and adjusted. These measurements guaranteed a stable signal (revolution cycle). Next was the replacement of all electrolyte capacitors. In addition all soldering positions were newly soldered to avoid any malefunction in the future.
In the course of the next project works all functions and correlations of the electronics were examined with extensive measurement procedures. Hereby some more transistors, diods, trimming controllers were replaced, signal processment optimized and adjusted. In the end we were facing an idependent existance of an important reset signal influencing and disturbing the process by self-oscillations. Two transistors (X631 and X630) and a bipolar capacitor (C617) had to be replaced. The transistors showed a low leak flow and worked imprecise. I ordered a new chip from US/Hongkong. I still have another one (dublette). This was a crucial step.
The last and final steps included a precision calibration of the revolution speed by using a frequency counter coming with a rubidium frequency and GPS disciplined tool enabling a precision of 12 digits behind the point.
I asked a well known “slate guy” to make a round plinth of slate – not cheap but very effective.
What you see now is a precisely working Victor TT-101 coming with a 110V transformer. Excellent sound! And stable for the next 20 years.
In case you need the tonearm stands, the Micro-Seiki tonearm bases or the red platform on which the Victor stays pls. ask me for prices.
My two very experienced techs of Audio-Technik in my home town had to repair several defects, in total 22:
they couldn’t get a reliable speed indicator signal from the motor. Therefore the motor was taken apart and maintained. A signal grommet which is affecting the resonance signal (rotation speed clock) new positioned and adjusted. These measurements guaranteed a stable signal (revolution cycle). Next was the replacement of all electrolyte capacitors. In addition all soldering positions were newly soldered to avoid any malefunction in the future.
In the course of the next project works all functions and correlations of the electronics were examined with extensive measurement procedures. Hereby some more transistors, diods, trimming controllers were replaced, signal processment optimized and adjusted. In the end we were facing an idependent existance of an important reset signal influencing and disturbing the process by self-oscillations. Two transistors (X631 and X630) and a bipolar capacitor (C617) had to be replaced. The transistors showed a low leak flow and worked imprecise. I ordered a new chip from US/Hongkong. I still have another one (dublette). This was a crucial step.
The last and final steps included a precision calibration of the revolution speed by using a frequency counter coming with a rubidium frequency and GPS disciplined tool enabling a precision of 12 digits behind the point.
I asked a well known “slate guy” to make a round plinth of slate – not cheap but very effective.
What you see now is a precisely working Victor TT-101 coming with a 110V transformer. Excellent sound! And stable for the next 20 years.
In case you need the tonearm stands, the Micro-Seiki tonearm bases or the red platform on which the Victor stays pls. ask me for prices.
Verkäufer:
- Versand aus Deutschland (80335)
- Käufer zahlt Versand
- Versand weltweit
Zahlungsmethoden
- Barzahlung bei Abholung
- Überweisung
- PayPal
Inserats-ID
7880787643
Angebotszeitraum- Start:
- 17.03.2023 - 17:15
- Ende:
- 16.05.2023 - 17:15
347 mal in 15 Tag(en)
