• 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.

missing circuit components- why?

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hey, i have been looking at my Marshall sl x 100watt amp head, i have noticed the following components are missing from the amp

Diode 1
C12
R7
WH1
LK1
R22a
C14a

some of you might have seen the other thread that i couldn't bias the amp and the 6l6s where running at 70ma! could the components have been removed to make the amp run el34s instead than 6l6s?
 
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