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Graphs after repair amplifier

Pjetrof

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What to those graphs tell me?
could you calculate sinad with those graphs?

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pma

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You are not serious, are you? Nothing about SINAD can be said from those low resolution plots.
 
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Pjetrof

Pjetrof

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Unfortunately i was serious sorry for the apparantely dumb question.
i was hoping that someone could say what those graphs meant! I didn’t know we had to be technical engineers to be
posting on this forum!
i don t have a clue what a spectrum analyser is!
also not what a scope is.
so again sorry for the dumb question.
My old man, bless him, he becomes 75 today.
He always said son there are no dumb questions only dumb answers!
Anyway thx for helping or explaining!
 

SIY

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Well, you got the answer to the second question: no. Answer to the first question is, it tells you that the amp has an output when the input is driven so is not profoundly broken. That’s all it tells you.
 
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