Chris from Cornerstone joins us again for this Marshall re-biasing video. This is an all original JCM 800 - 2203 that is receiving new tubes all around. Of course, a quick inspection is in order.
Measurements of the electrolytic caps show that most of the caps are good, one of the filter caps are about ready to go.
As I make incremental adjustments to the bias as the tubes cook, The question is, are the tubes really balanced as the box from mesa advertises.. I'd think not. As a matter of fact, the tube deviation is 6 miliamps from all 4. Good thing I was biasing for the highest current flowing tube.
Measurements of the electrolytic caps show that most of the caps are good, one of the filter caps are about ready to go.
As I make incremental adjustments to the bias as the tubes cook, The question is, are the tubes really balanced as the box from mesa advertises.. I'd think not. As a matter of fact, the tube deviation is 6 miliamps from all 4. Good thing I was biasing for the highest current flowing tube.
Robotube is fired...
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