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high dc offset

  1. P

    High voltage at the speaker terminals

    I have a 2275 that is stuck in protection. The right channel is stable with 6 mv at the speaker terminals.The left channel read 50 mv and dropped to 25 after warming up, then the protection related kicked in. Now the relay is back in protection and if I manually engage the relay, it reads 42...
  2. P

    Marantz 2245 restoration... hit a snag and need some help, please!

    Hello AK'ers! I'm new here. I don't have a lot of knowledge but I've restored a couple of HK330's, one wasn't working, and recapped a Tandberg TR1040 without issue. I picked up a 2245 that the previous owner said "...had a quieter channel, so an output transistor was replaced and now it...
    • pkcain
    • Thread
    • high dc offset hum marantz 22xx output transistor relay click
    • Replies: 9
    • Forum: Marantz Audio
  3. vinylisfinyl

    Realistic STA-78 with high voltage on left channel output

    Greetings, fellow stereo curators! I need some assistance from you today regarding high DC voltage on the left channel in our beloved STA-78 receiver. Dad bought it new in the late 70s and passed it on to me, but when he tried using it this summer in our garage it let out the magic smoke after...
    • vinylisfinyl
    • Thread
    • channel high dc offset high voltage output realistic speaker sta 78 sta-78 sta78
    • Replies: 39
    • Forum: Solid State
  4. ELzekio

    JVC RX 950v High DC OFFSET

    Hello everyone, So I have recently been spending time working on a JVC RX 950 that had some weird issues. Seemed I was only getting sound on one channel, but after re doing some cold solder joints on the pre driver board and replacing the caps on the pre driver, I was able to restore the...
    • ELzekio
    • Thread
    • dc offset high dc offset jvc jvc rx 950v jvc rx 950v high dc offset
    • Replies: 16
    • Forum: Solid State
  5. Oldsansui441

    pioneer sa-5300 very high dc-offset

    Hi, l am trying to diagnose a problem with this amplifier, it has VERY high dc offset, same on both channels. After switching amp on the dc offset reads around 10.00V on both channels depending how cool unit is. After ten minutes of warm up the lowest the dc offset reads is 470-480mV both...
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