New tubes, but maybe 1 failing

shadow070

Member
Hi,

Last week i retubed the Herbert. Now when powering up the amp i wait a minute or 2 and then switch of the standby, i get 1 loud pop every time. This only occurs when switching from standby in the beginning and doesn't happen after.

Could it be a bad power tube?

Thanks,
Robert
 
I've had preamp tubes do that. One quick test you could do is to pull the PI tube (should be preamp tube closest to the power tubes) and then power up the amp and see if it pops. This basically takes the preamp/fx loop out of the equation.
 
Well, turned the amp on a vew times these 2 days and it didnt happen anymore so..... ill keep my fingers crossed.

Thanks for the input!
 
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