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Hoffman Amps Forum image Author Topic: Mesaboogie Mark III Simul-Class  (Read 1665 times)

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Offline Leevi

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Mesaboogie Mark III Simul-Class
« on: February 19, 2024, 05:35:54 am »
I have this amp on the bench and have localized an issue in bias voltage (220V) on the second pair of the power tubes.



EDIT: I think the cause is voltage leaking to the grid.



/Leevi
« Last Edit: February 19, 2024, 07:35:02 am by Leevi »
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Offline Leevi

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Re: Mesaboogie Mark III Simul-Class
« Reply #1 on: February 19, 2024, 10:39:58 am »
Solved, it was a leaking coupling cap.


/Leevi
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