Hi guys, maybe someone can help me. Amp-US made fender hrd never even gigged Problem-When turned on the amp distorts, pops, crackles, etc..with or without guitar plugged in. Sounds kinda similar to unplugging your guitar or an effect repeatedly when everything is turned on for reference. Kinda like a ground issue. I just had the a tech work on it almost 2 years ago because the sound was cutting out and getting crossover distortion. Replaced all plastic jacks and a few other things per my request. Also put in a set of SED 6L6 power tubes and replaced preamp tubes. Could this be a tube problem or worse? Anything I can look for? Any suggestions? In the meantime could I use my Egnater Tweaker 15w to power the deluxe? If so would just plug it into the power in on the deluxe? Any help would be appreciated.