Tech Advice - Popping!

[sonicboom]

I have an anniversary Carmen Ghia. I replaced all the tubes around a year ago. Since my last practice the amp is making some pops that make the signal go from soft to loud. But the loudness only lasts the pop. Its almost similar to when a guitar cable is not making good connection but still sounds. You can hear the pop without a cable connected to the amp once the volume is up.

I will appreciate any recommendation as to what tubes might be doing this or if these are symptoms of something else. Amp was sounding great till last practice.

[Deleted]

Try carefully re-seating the tubes?

[wubberdubber]

Most likely a tube. If you play through the amp every week for a year, it's not inconceivable one may need replaced, since modern tubes don't have the life-span the vintage ones had. As Eric said, taking them all out and re-seating may help. Cleaning the tube sockets with Deoxit or a good electronics cleaner may do it. If you can get your hands on any spare tubes of the same type (12AX7, etc.), swap them out one at a time and see if the noise goes away.

[sonicboom]

Just so you know. The pops were indeed the power tubes. Mullard sucks. The sound fizzy and died fast. I replaced them with the factory installed electro harmonix and the awesome tone is back. Cheers.