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Post by John on Feb 6, 2006 11:39:47 GMT -7
I'm looking at the power tubes of my early 70's Marshall when I hit a chord. (no master volume...therefore power amp always on FULL)
When I hit the chord, the power tubes noticeably glow a much brighter orange. Then back off when I stop playing.
Is this a bad sign?
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Post by benttop (Steve) on Feb 6, 2006 12:16:25 GMT -7
It's probably worth having the bias checked.
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Post by myles on Feb 6, 2006 12:33:45 GMT -7
That is quite normal.
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