psarkissian

Also,... When was the last time you had the tubes changed out? They should be changed out every 12-18 months if you're a gigging musician, every 20-24 months if you're a weekend rock warrior. Use the specified stock tubes, no substitutes.

Take it to a Line 6 authorized service center, and when he has it on his bench, have him get in touch with me through Custom Support.

TrintyPC,... I would recommend registering your product and creating an account, so that you can log a ticket with Custom Support, and explain the situation to them so they can help you with that.

What snhirsch said. Do you have a link to that photo? Also GordenMack, be aware that if your JTV is under warranty, any function modification would void that warranty. A number of things can go wrong. Some of it my be easy to do, but it can also be easy to mess up. Please tread carefully.

The 99-065-0005 on the Full Compass site is the latest interface hardware. JTV guitar firmware version 2.00 or greater is compatible with Workbench HD, while firmware prior to that is compatible with the earlier Workbench. There's an assortment of JTV guitar information here on the Line 6 Knowledge Base.

Oh, and plastic safe contact cleaner,.... couldn't hurt. Carefully pull the Volume and Tone control knobs up and off, put some plastic safe contact cleaner on a cotton swab, let a drop or two drip go down the shaft into the inner workings. Turn the pots back and forth a few times to work it in. Couple drops to each shaft is all it needs.

cruisinon2,... normally I would agree with you. But in this case, if he is able to rock it back and forth, then there is something else going on that contact cleaner won't fix. Sounds like loose hardware contributing to an intermittent chassis ground. I've seen this malady and dealt with it before, that's why I know. Otherwise,... good call, would've been might first suspicion too.

Intermittent contact internally to the circuitry. Rocking the knob back and forth will just loosen the chassis ground contact, adding to the intermittent and crackling. It could be as simple as a loose retainer nut under the control knobs, or something more deep in the circuitry that has to be troubleshooted by an Line 6 authorized technician in your area. Go into your Line 6 account, make sure your device is registered and log a ticket.

Probably an impedance mis-match between the laptop and the CD/MP3 input. More than likely a component on the input board. It is repairable. Go into the ticketing system into your account and log a ticket, and see about getting a return authorization.

"I wouldn't expect an official "thumbs up" from L6. As far as they're concerned, mere mortals should never attempt such things."---- On the contrary, being something of a custom tweaker myself during the last four decades, I get it. But, as a Line 6 person, I need to make people aware of some things. Do your homework, know what it is you're getting into. There are differing levels of knowledge and skill here. Need to make sure everyone is aware of what they are getting into,... and I don't want anyone needlessly voiding their warranties, because of altering some functionality. For those who don't care about warranties,... as a guitar tweaker, all I can do is wish you luck. "Can't imagine there will be any addition pull from the P-Rails compared to the original humbuckers in the JTV-89. Unless I'm missing something?"---- The specs of pick-ups between companies may not be the same, spot-on to a gnats behind. Seymour's specs might not be the same as our specs,... so just be aware of that when adjusting pick-up height. It's a different kind of cat, you have to cuddle it under the chin a little differently.

Log a ticket in the Line 6 ticketing system in your account. Make sure your product is registered. Needs to be troubleshooted further by an authorized service tech.

It could be one of four reasons. Best bet is to log a ticket in the system, it will have to be serviced.

Pick-up height from pole piece to the strings will be a factor. Magnetic pull on the strings will induce warbling effect into the audio when in Model mode using the piezos. The pick-ups are turned off in Model mode, but the magnetic pull will still be there. Being in Liverpool, you may want to seek out Tim Morgan, Shane Blower or Mark Wright, in the midlands (in the Northampton and Warickeshire areas), and pick their brains on this. They are the chaps who used to do guitars at Line 6 Rugby, UK, before it closed. They know their stuff.

Nut won't solve this one either. Not this one. Good call though.

garymwest,... it should come back to me. Neck align won't fix it.

It will be more about the resonant or damping qualities of how the nut affects the overall sound, and less about the name of the brand. Do the homework for something that works and gives you what you're looking for out of it,... and with the correct string spacing. And remember, Line 6 doesn't support mods that affect the functionality of the product. And that such mods would void the warranty.

You're good then. I just worry about those whose warranty is still good. Hate to see someone mess that up. Knew I wouldn't have to worry about you.

Just be aware that Line 6 doesn't support mods that alter the functionality of the guitar. And that such mods would void the warranty.

:) YAY! Now it's time for some rock-n-roll.

Uninstall Monkey with Line 6 unistaller, then re-install Monkey version 1.71 program.

For Product, select "All",... for Software, select Line 6 Monkey,... for OS, select "All OS, click on "Go". It should be version1.71, second on the download list, and is El Capitan compatible.

I'm stay connected with a number of the Rugby bunch on FB and Linkedin. We trade notes on gear in general every now and then. So maybe one of them would be helpful when the time comes, I can send one of them your way if they're available, see what I can do if needed. Being in Los Angeles, it's hard to coordinate from here.

Yes, a Support Ticket.

1- Line 6 Monkey apps should be up on your screen. 2- Put in a fully charged JTV battery in the battery compartment of the JTV. 3- Connect the USB/RJ45 Interface device between the VDI connector on the JTV and the JTV to computer interface. 4- Take a headphone adapter or a short 1/4-inch TRS cable and plug it into the 1/4-inch jack. 5- You should hear a relay click and see both LED's on the interface turn green. 6- On Monkey, click on "Change Device" to refresh the GUI and reinitialize the line. 7- Proceed with update procedures. If there is still a connection problem then it may be a hang up somewhere. Make use of the Line 6 support ticketing system in your Line 6 accounts. There is a version of Monkey (v1.71) in the Downloads section of the Support area on the site, that should be up to date and El Capitan compatible.

Use the Sovtek 5881WXT matched pair.