hey gtrguy... its a vht pitbull 45 combo, and i really have no idea what's wrong with it. tried to fire it up the lights went on but when i hit the standby button it just shut down (light turned off and all that). any idea what it could be???On the amp front- what is the amp and what do you need done? I do all my own amp repairs/mods and may be able to help you out. When you've got a lot of tube amps (like me) it's worth it to do your own work.