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 1 response by larryken

switch the tubes to the opposite sides and see if the popping migrates..then you'll know...yes this is a possible symptom.
Larry