while jamming smoke started coming from the amp (marshall 1987). i shut it down and started it up again after 5 minutes and it was fine. i continued to jam.
when i got home i opened it up and all of the guts looked fine, visually. the amp sounds good still. i haven't replaced the tubes.
my theory is the bias was adjusted hot with the previous tubes. i popped in some groove tubes "7" power (high power) tubes and the smoke incident happened after that. previous jams with the groove tubes were fine.
what could it have been?
when i got home i opened it up and all of the guts looked fine, visually. the amp sounds good still. i haven't replaced the tubes.
my theory is the bias was adjusted hot with the previous tubes. i popped in some groove tubes "7" power (high power) tubes and the smoke incident happened after that. previous jams with the groove tubes were fine.
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