2. amps-preamps
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Tubes and their problems

I thought since I am currently having a few tube problems, and since i am not
that technically inclined, I would ask what are the typical warning signs and problems of our beloved tubes.
I will start off with the "popping" sound that I believe indicates either tube failure or impending failure ( perhaps someone can clarify why a tube does this?) What are the other various warning signs to look out for?
128x128daveyf
phd
1,316 posts
 
Bifwynne, of course, let us pray!
daveyf's avatar
daveyf OP
2,871 posts
 
Actually the tubes that are making the noise are ( I think ) in my preamp. One of them lets me listen to the Al-Jareera radio station when the gain is turned up! Interestingly, they are not that old, probably have only a few hundred hours on them, if that. Nonetheless, I am happy that they are in the preamp vs. the ARC amp. My ARC D70mk2 amp is a bear to re-bias if it needs tube replacement.
phd
1,316 posts
 
Daveyf, lets hope the bad tubes if any are in the preamp. I think you have some concerns but more importantly you are picking up a station I've never heard of.
daveyf's avatar
daveyf OP
2,871 posts
 
PHd, I actually was referring to Al jazeera...lol..although that might not be the station, it could have been anything for all I know!
Anyhow, I am going to get a handle on which is the offending tube and replace it.
rodman99999
6,132 posts
 
If your system is bringing in al-jazeera: look for tube with a beard and towel-wrapped head. Eliminate it, with extreme prejudice, before it blows up your house!
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