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Okay .... my problem with battery turned out to be a "bent pin" in the battery compartment. Easy fix, but the technician waited three weeks for "response" from Line 6 (never did get one) before he returned his attention to the guitar out of his own initiative and solved the problem. Next time, I'll check the pins to see if any look out of whack and fix myself.

My guitar remains with service center fellow. Had received email from him a week ago indicating he had reached out to Line 6 factory via email to get their insights into the issue at hand (he still believes it is "something within the battery compartment") but to date, have not heard back. Just emailed him this morning to inquire as to whether he has had even a "preliminary response" from factory. I'll let you know what I hear ....

Okay ... so mine is not the simplest of solutions as of yet. My wife took guitar into service center on my behalf and technician has ruled out the basic "fix it while you wait" issues associated with battery compartment. Guitar has been left with technician and we await some insights into what may be at issue. I will keep you posted on my experience.

Hmmm .... not the exact issue I've had with my (two year old) JTV-59 but sounds eerily similar. Question: When you put in a fresh battery, do you get any green lights at all on the indicator on back of guitar or is it simply not recognizing battery power? That's what I'm dealing with ('though it didn't go dead in mid-stream). Others have suggested a "short" or such in the battery compartment. My guitar goes in for a look see this week in Long Beach, CA ... I won't be with it, but the service center says "If it's in the battery compartment, should be able to repair it while you wait." Let you know what happens by week's end ....

Thank you for pointing that out. I should have mentioned that I did precisely that (having browsed the forum last night). As of this morning, no signs of life. Still have battery in compartment a hopin' and a prayin' for life this evening when I return home from work, but the cynic in me says "Highly Unlikely."

Wow ... I am just now experiencing this same problem. I have had my JTV-59 for two years. Initially had two batteries. Recently purchased a third battery as one battery was charging only to three lights. Anyhow, took a break from JTV and left it unplugged with no battery in compartment for maybe three weeks. When I went back to use it, could not get either of the original batteries to display any green lights when secure in compartment. Took newly ordered battery out of box and charged it fully. Placed it in battery compartment of guitar - nothing! I have tried three different batteries (all Line 6 batteries) and none of them can produce even a single green light on indicator. Guitar works fine as "electric" but none of the unique features, of course, work without charge! Is there any chance I can resolve this without returning guitar to Line 6?