anyone on here have a complete copy.
Its mainly the alignment pages i need as the only ones i can find start with item no5 which is a bit frustrating🙁
Its mainly the alignment pages i need as the only ones i can find start with item no5 which is a bit frustrating🙁
You can download the full service manual from vinyl engine...
If you can't let me know i have a copy somewhere in my computer
Just found it
If you can't let me know i have a copy somewhere in my computer
Just found it
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If you eliminate the differences between the 3020 and the 3020B you could still use the 3020 idle current alignment as an example which does start at =1 at least it gives you an idea.
Your right had a look and the setup procedure starts at "point" 5 and I never noticed it there most be a page missing sorry.
The one thing I hate about these amplifiers is the lack of emitter resistors. I usually add them because it makes the amplifier much more robust when the outputs are replaced with modern devices. It also makes measuring and setting the idle current very easy.
A guy from Brechin on Audiokarma seems to agree with me that the differences between the 3020 and the "B" model aren't major -
NAD 3020 or 3020B? | Audiokarma Home Audio Stereo Discussion Forums
NAD 3020 or 3020B? | Audiokarma Home Audio Stereo Discussion Forums
Yes, the 2N3055/2N2955 outputs - these old transistors had so much emitter-spreading resistance you could get away without external resistance I think - not a shortcut you can get away with in modern devices. 0.22R 5W non-inductive are typical.
What Mark said. The past few times I have done it, I have used 3W metal oxide film types.
On some versions of the PCB, there are actually places for the resistors to be fitted, but they are bridged with wire links. On some versions, you need to cut the PCB track and fit the resistors to the underneath of the board.
On some versions of the PCB, there are actually places for the resistors to be fitted, but they are bridged with wire links. On some versions, you need to cut the PCB track and fit the resistors to the underneath of the board.