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Get off my LAWN! "Grumpy Old Farts"

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So at rehearsal yesterday my B15 started to sound rough and had an increased hum. Looking at it I notice one of the tubes had red plated. I switched it off for a few moments and it came back on normally. We finished the rehearsal.

After the band had gone I used contact cleaner on the two sockets and tightened up the contacts in the bases. I reinstalled the tubes in the opposite sockets.

Today practicing away it happened again. The same tube in the opposite socket was red. I replaced it with a good but used tube from my stocks. Got down to practice yet again. Shortly the other original tube went red. Did the same thing and finished my session. The tubes that are in there now I’ve had for more than forty years sitting in a drawer. I hope I’m finished with this amps idiosyncrasies! :)
 
So at rehearsal yesterday my B15 started to sound rough and had an increased hum. Looking at it I notice one of the tubes had red plated. I switched it off for a few moments and it came back on normally. We finished the rehearsal.

After the band had gone I used contact cleaner on the two sockets and tightened up the contacts in the bases. I reinstalled the tubes in the opposite sockets.

Today practicing away it happened again. The same tube in the opposite socket was red. I replaced it with a good but used tube from my stocks. Got down to practice yet again. Shortly the other original tube went red. Did the same thing and finished my session. The tubes that are in there now I’ve had for more than forty years sitting in a drawer. I hope I’m finished with this amps idiosyncrasies! :)
You should be good until 2057! :laugh:
 
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Back in the medieval times the "serfs" got paid in mead, or ale. The workers would get a break in the morning and afternoon when pints and quarts of said ale would be passed out. If the workers were particularly thirsty, they would drink too much ale, and get too useless or drunk to work. Thus, the boss would shout out, "Mind your P's and Q's!" or, easy on the pints and quarts of ale...
The things you can learn around here...
 
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