Recent content by Duni

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    NAD 3020A Amplifier Low Volume

    The two schematics came from the same document, the one one post #26 does have a connection to ground, doesn't it? (on the left of the picture). On the service manual I downloaded I have both of them and it seems to correspond to my board.
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    NAD 3020A Amplifier Low Volume

    The output from the bridge rectifier is 64V DC but goes into four caps and their output is 32V. I don't know if this seems really bad, shoud it be lower? The 25V caps are not located on the same circuit and they don't seem to be part of the power circuit.
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    NAD 3020A Amplifier Low Volume

    Of course I replaced capacitors with ones that have the exact same capacity and voltage rating. As for the polarity, I made sure to put them in correctly (it is labelled on the board). I did the measurements again without any load, AC input is 48V with DC output 64V, and ripple is 12V. With...
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    NAD 3020A Amplifier Low Volume

    Here is an image of the interior of the amp I have some oxydation traces on the bridge rectifier but with 31V AC input it outputs 24V DC which seems normal to me...
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    NAD 3020A Amplifier Low Volume

    Yes I replaced all the electrolytics capacitors
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    NAD 3020A Amplifier Low Volume

    Thank you all for your answers! I also am a total novice, that's why I hoped for a simple fix :) I am not sure about the 4 1uF 25V caps because the low volume is the same on both channels, and they seem good... I'll try to replace them as soon as I get my hands on replacement parts. I've...
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    NAD 3020A Amplifier Low Volume

    Hello, I have the same model (nad 3020A) with exactly the same symptoms. I tried replacing all electrolitycs caps, but it did not solve the problem (it did made the volume a little better and removed the hum) So I would like to know what exactly you changed that solved the problem please. I did...
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