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regulator transistors

  1. SmokedPorter

    CR-2020 Service Bulletins - Please Help

    I am not a technician and need advice on getting upgrades done on two CR-2020s. See “Background” below regarding the our two CR-2020s. Anything will be greatly appreciated. Thank you. A couple of days ago I dug out our two CR-2020 receivers to look further into the speaker protection relay...
    • SmokedPorter
    • Thread
    • advice cr-2020 electrolytic help needed power supply regulator transistors service bulletin yamaha
    • Replies: 6
    • Forum: Solid State
  2. UrbaXter

    Pioneer SX 1250/5590... Yes, HOT... But how much?

    Hi guys, I have read here many posts about these "little beasts" running hot at the right side, just over the stabilizer board. I just changed some of very well known noise signal transistors in my beloved SX 5590, regulated the stabilizer voltages, checked the DC offset, and set the bias at...
    • UrbaXter
    • Thread
    • burning extreme heat heat hot hot resistors pioneer sx 1250 pioneer sx 5590 regulator transistors stabilizer board temperature
    • Replies: 9
    • Forum: General Audio Discussion
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