psarkissian

Program for the heads are different, and slight difference in other places to accommodate different 3rd party cabinets.

Modeling program for the heads is designed for that, program for the combos are not. Been that way since Spider III and Spider Valve.

As I've said before, these are not all analog tube amps, so you can't get away with doing the kinds of things we used to

do in the all analog tube amp days (circa early 1970's).

Had this chat with a audio test analyst guy here, as we both used to work at JBL (or JBL/UREI in my case). Was picking

his brain a while back for my prior comment, as he was dealing with some Neodymium speaker testing that week. Hence

my prior comment.

Neck wood density, head stock shape, string gauge and tension, all play apart in how the neck plays a

part in the sound.

Being a bolt-on neck, it by it nature does not have the same acoustical coupling as a set neck. The whole

bolt-on neck idea was about making manufacturing easier to mix and match necks and bodies, do quick

swap repairs, and had little to do with sound.

Bolt-on necks are a recent thing in the history of string instrument, introduced by Leo Fender as I recall. Set neck was

the standard way for almost a millennia until then.

Some like less sustain, because they can add to it with a sustain effect. Once resonance in it, it's hard to take it out. 

Yes, the tail piece and bridge being the other end of the guitar play their roles in the sound as well. Interaction of resonances

and tensions. Too stiff, it pinches and deadens to note. Too loose and it get floppy, droopy and dies away.

It's about finding that happy mid ground.

Sounds like it's time to log a Support ticket, but register the guitar in your account first.

What silverhead said.

Can't do that.

Each program board is branded, the program is set up for the output load of that type.

Can't turn a combo into a head without output impedance issues that can lead to damage or total failure.

MkI or MkII? 

Any of the LED's light up?

That's right. duh. my bad.

Plug in, light goes on, then goes off,... battery is in and charging.

After sometime it will start blinking when it's charged and done. 

Need a TRS cable.

The is a tube amp, keep your finger out of the insides, big shock hazard.

Take it to a Line 6 authorized service center and have them deal with it.

Just make alt tuning part of your custom patch in Workbench HD.

Need to do the custom tuning thru Workbench HD as part of the patch.

Doing it manually does not automatically save it to Workbench HD, just saves it to the guitar.

Screen shot please.

Very good.

Not off-hand, would have to look that one up,... 50-04-0126.

No problem, that's what I'm here for.

Better to go with an authorized service cent in your area, have them do it.

https://line6.com/find/service_center/

Music Gear M.D.
Servicing: Electronics,Guitars
6901 W 117th Ave
Broomfield, Colorado, 80020
303-868-1828
craig@musicgearmd.com

If you really must do it yourself, check online with Full Compass.

They do loosen over time.

Me too.

Not common. I get the odd one across my repair bench.

Sometimes the cable plug, sometimes the jack. No real pattern. 

Looks like it goes to 10.8 Mountain Lion. Catalina is too far ahead for it.

And a 500 Electric is not compatible with Workbench HD, too many differences

between old and new models formats.

Use an older computer to interface with a 500 that uses OS compatible with old Workbench.

Check the OS requirements on the Downloads page for product and associated application.

https://line6.com/software/

Web store doesn't sell outside the US.

Check with authorized service centers in your area,...

https://line6.com/find/service_center/

... should be batteries making their way to sources.

Inside the US, the Line 6 web store or Full Compass would be the source.

Judging by the serial number, I can se why it could be a piezo.

And Support has given you the option of sending to me.

Might want to go into Workbench HD and reset the volumes back to 0dB before it comes to my bench.

You play the 300 thru the 500X, but you can't update thru it using Monkey, nor use the 500X with Workbench, as the 500X wants to see Workbench HD.

500X has Variax patches attached to the presets. When in "Force" mode, the 500X determines the guitar patch, when in "Don't Force" mode, the guitar selects the patch.

Check the online owner's manual for more details on this.

30-51-0381 are still available, just don't know about stock levels. Check with Full Compass.

Regarding the thread specs, I have no info on specs for the arm thread or the screw it locks

unto at the bottom of the tremolo arm shaft.