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marantz 2230b

  1. ChrisP2

    Marantz 2230B Hum Issues

    Lots of information out there on Marantz hum, major headache on this one. Low level 60Hz Hum - volume independent, source independent. I checked all of the normal problem areas, power switch, phono preamp, preamp, rear jacks, etc. Pulled power on the Preamp, Tuner and Phono boards, hum...
    • ChrisP2
    • Thread
    • marantz 2230 marantz 2230b marantz hum
    • Replies: 1
    • Forum: Solid State
  2. Yemm66

    2230b alone or Phono preamp too?

    Hello all. Just wondering if you think the 2230b has a strong enough phono section that it would be redundant to also add a nice phono preamp as well? I have recapped the whole receiver and used high quality Nichicon electrolytics on most of the phono board and also some Wima film caps. Just not...
    • Yemm66
    • Thread
    • marantz 2230b nichicon phone preamp vinyl
    • Replies: 8
    • Forum: Marantz Audio
  3. R

    2230B got 27V DC in power amp input!

    Hi, Got a non working 2230B from eBay and planned to repair it myself. Tuner and pre amp sections work well but power amp has 23-27 V DC in one of the channels input, that is J701 in diagram. Voltage rises from 23 to 27 as power transistors and heat sink warm up. And they get hot in short time...
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