Hello fellow ampagers,
I've been away from these pages since many months...
I have a question about a tube.
I have a pair of RCA 6L6 blackplates bought used, that I have been using for some time in my SF Vibrolux Reverb. Now I have taken the tubes off the amp and have seen that the getter halo on the side of one tube is normally silver-blackish, while that on the other tube is dull and pale brownish (see photo below). I don't remember if the halo looked like this or if the colour changed during the recent use.
I must add that this amp developed a bad short (with flames) in the power tubes area some time ago. I have replaced one socket, but I can't tell for sure if the tube with the dull getter stayed in the burned socket.
Is the dull brownish color normal? May I use safely the tube or should I trash it?
Carlo
I've been away from these pages since many months...
I have a question about a tube.
I have a pair of RCA 6L6 blackplates bought used, that I have been using for some time in my SF Vibrolux Reverb. Now I have taken the tubes off the amp and have seen that the getter halo on the side of one tube is normally silver-blackish, while that on the other tube is dull and pale brownish (see photo below). I don't remember if the halo looked like this or if the colour changed during the recent use.
I must add that this amp developed a bad short (with flames) in the power tubes area some time ago. I have replaced one socket, but I can't tell for sure if the tube with the dull getter stayed in the burned socket.
Is the dull brownish color normal? May I use safely the tube or should I trash it?
Carlo
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