weak tube symptoms?


I'm getting a subtle, occasional popping sound coming from the left channel of a Mcintosh MC275.
Is it possible a tube is getting weak?
What are the other symptoms of weak tubes?
- thanks for any wisdom.
Ted.
lovepianos

Showing 2 responses by lovepianos

great advice. thank guys.
How long can tubes last? I'm using 12AX7 and 12AT7 tubes in a Mcintosh MC275.