• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

DM160 Magic Eye help

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Just to be clear - lights up - what colour? The grid never lights up. The filament only glows orange if you put too much voltage across it. It should be deep red or not visible at all. When everything is working the anode lights up greeen.
 
Finally got it
 

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