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oscillating

  1. E

    Superscope R1240 / Marantz 1040 receiver - oscillations

    Hello! I've been working on a Superscope R-1240 which I posted about in another thread: Superscope R-1240 (Expert TA 940) Now I've solved some of the initial issues. But I would like to get some input about another(?) issue which I hope there might be some experience about in the Marantz forum...
    • E029127
    • Thread
    • oscillating oscillations transistor replacement
    • Replies: 0
    • Forum: Marantz Audio
  2. D

    Kenwood KA-9100 oscillating

    Hello everyone, first post, I'm from France and passionate about renovating old audio gear, from turntables to tuners and of course vintage amplifiers. I started my journey in this passion about 5 years ago with an SU-7700 from Technics which is still working beautifully to this day. In the...
  3. faccan

    Another F-2624 bias problem

    Hello, I'm working on a 7070 that the relay doesn`t "click". I had changed both 1 omh fuse resistors in power supply board, all the fuse resistors of the F-2624 and deoxided the presets. I tried to set bias current of one channel starting from maximun resistance in preset ( It have the F-2624...
  4. goldswimmerb

    McIntosh 250 buzzing/oscillating

    Hey guys, so I have an MC250 on my bench that emits a terrible buzzing sound out of one channel. It was brought to me as it allegedly had bad Capacitors, so I went through and Recapped it to no improvement. After the recap I noticed that once channel would occasionally oscillate and had what...
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