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Yes sir. Some of the bolts were loose. (Hand Tightened Loose) Marco at Mesa said that happens sometimes during shipping.

I talked to Mesa this morning and they said the mounting bolts for the transformer may be loose. In the recording I was flipping the switch for the fan and diode rectifier and in an out of standby. That part at the end was the reverb. I had static too at one point. Upside down the amp is fine. I...

Hello I was wondering if any of you have encountered a Mesa Lonestar 23 10/50/100 that Hummed from behind the amp. It's a 2011. It has EL34's in it. Guitar is connected. You can turn the fan off. Turn the Reverb down. It hums on all power settings. You can hear the hum through the speaker when...