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
daveyf's avatar
daveyf OP
2,957 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
1,324 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
2,957 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
6,206 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!
daveyf's avatar
daveyf OP
2,957 posts
 
Rodman99999, that's a hoot. LOL.
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