StanPenn1

Workbench is a 32-bit app. In case you are running on a 64-bit OS, you will need to install the 32-bit version of the Java runtime. This has worked successfully for me on multiple PCs.

Sorry for the delay - new project. Looks like we can do a private offer deal. I'll try to get it set up by tonight.

Sorry if I gave the impresson I didn't know your major contributing role. I was trying to convey that the broken-off stop was pretty subtle to see. I have learned a lot from your posts over the last 3 years since I was turned on to Variaxes by a buddy.

Ah, I see it now. Good catch.

Sorry, I didn't see Psarkissian's response before i posted mine. The 2.5mm for intonation (my wrenches read a bit under at 2.45mm) works out to be 0.096", which is pretty much the same as 3/32" (0.094").

I just pulled out a caliper and checked mine: 4mm - for truss rod 2.5mm - for piezo location on bridge intonation adjust 3mm - for locking nuts and bridge string locks Then I grabbed a multi-wrench unit and double checked. 3mm is 0.118", which wil give a tighter fit than 7/64 at 0.109".

Yes, it is for a Standard. The picture is incorrect. The part does have a stop tab, but it is offset one selection from what the 89F needs. Brue56ski just wants it for the cap. :)

From a quick look, Reverb and eBay don't support selling a $0 item (I'm shocked! ;)). Hopefully, you have an account for one of those. I could post it as Tuning Knob Parts or some such, so you can find it. Say, for $1. I expect it will still get to you faster than you buying it yourself. Before I bought it, I confirmed with their parts dept. that it is a special order item with a lead time of 2 weeks: https://www.fullcompass.com/prod/517487-line-6-50-03-0137-alt-tuning-knob-for-variax-standard.

D'oh! I just had to RTFM again on the Ghost-loaded saddles: Ghost loaded Floyd Rose original style saddles. Saddles are three different heights and come with everything you need to install. I'm not seeing any Graph Tech raw piezo offerings. Seems like the add-a-ground-wire mod to the existing piezos is the only option.

But I assume the pairing is height related, given the E-E, A-B, D-G split.

I have repaired a Variax 700 Acoustic for use by a friend of mine, who is currently using a regular acoustic in a duo. He's new to the world of Variaxes. Although hands sweating isn't a big deal for him, I'm considering putting in Ghosts so the setup is more bulletproof. How does one obtain the piezo elements for this? My weak understanding is the core units are from LR Baggs, but Graph Tech mods them for the useful string saver coating in the 89F. Per a post from Psarkissian, raiding these out of 89F saddles is not a good idea. Plus there are the differences per string pairs - I'm not clear on just what is different.

Er, as per Silverhead, it's simpler to leave the first field as Choose Hardware.

One more tip. When you go to LIne 6 -> Downloads, select Variax hardware, Variax Workbench software, but leave the OS field as - Choose OS -. Otherwise, you won't see Workbench 1.75.

Using the latest Java Runtime on two different Windows 10 PCs has worked for me with both Workbench (non HD, for a 700 Acoustic) and Line 6 Edit (for a Pod XT Live). Details: 1. Before installing Workbench: From here (https://www.java.com/en/download/manual.jsp), download the Windows Offline version that is *not* 64-bit. Install it. 2. Run the Workbench installer. When it gets to the screen where Java is listed as a required prerequisite, uncheck all Java-related entries. Then continue with the install.

Er, for any English majors, I didn't proofread enough after some editing. Should be: behavior ... runs, and something ... is.

I have a JTV-89F purchased new a few years ago, plus a spare I picked up used a few months ago. The 1st one is quite solid on functionality (knock on veneer). Sadly, the 2nd one is being flaky on engaging modeling. I've ruled out the typical knob/switch issue. It appears to be a power-on initialization problem. If it boots up properly, the model LED is white when engaged, and it's good for days if not unplugged. But if bootup doesn't go well (frequency of this happening varies wildly), behavior with battery+1/4", XPS with 1/4", and VDI run the gamut: 1. No light at all, and mags only with 1/4" (nothing for VDI - kind of expected if DSP -> AES path isn't up). 2. Blue, green, or purple (!) model light and mags only with 1/4". Seen most often with XPS. 3. About 1/2 second red flash and mags only only with 1/4" . Every once in a while on trying this, if I wait a while, the normal white modeling light/functionality does come on when pushed. 4. Red alt tuning light and same outcome. 5. Strangely, sometimes the white model light is on right after plugging in via VDI. My #1 unit doesn't do this. Here's where I disclose I've been an electrical engineer for 40 years, so you can all roll your eyes now. Plus a hack musician from earlier than that. I've designed analog instrumentation, digital boards, mixed signal very low EMI boards, lots of embedded systems, some PC peripherals, and worked in firmware and software. There are lots of questions I could ask that likely wouldn't be acceptable in this forum. I did remove the main board and inspected it under magnification, along with all connectors. I blew off the board (with an antistatic-rigged air source). No difference. I do have a spare UI PCB assembly I could try, but I doubt that's going to matter unless something about the model/tuning switch states are intermittently wigging out the processor on startup. Anything else to try other than a service ticket? I've been building a rough idea of a schematic from lots of continuity testing, but that could go on for quite a while ;)

I'm totally new to this forum. Do you have what you need to PM me? Let it know if I need to add to my profile. Thanks.

I had actually bought 2 of the Standard alt tuning knobs, in case my buddy wanted us to do the fix ourselves. He opted for warranty repair instead. For 1 of the 2 I received, the cap promptly fell out of the knob. If you want, I can send it to you gratis. Some black epoxy paint ought to fix up the color. I don't want to take one of my 89F knobs apart just to see if the cap fits, so this would be a good science project. :)

While I'm rambling: I discounted the 59 knob for cosmetic reasons. Had I asked about the Standard/69 knob compat with the 89F before buying, I'm sure I could have been set straight. The stop is definitely offset differently with respect to the shaft D hole. But at least I have extra caps for the knobs. My buddy's new 89F had the cap missing from its alt tuning knob. It's in for warranty service (along with a bad piezo).

Oops, meant to say Standard, not JTV-69.

No deal. I recently bought one each of JTV-69 model and alt tuning knobs from Full Compass as possible spares for my 89Fs, and they are all that could be obtained. I was thinking I could just paint the silver cap black. Both are off by one in selection. Would only use if desperate.

Thanks for the quick response! That's the answer I was expecting.

My understanding is that all JTVs share the same main board hardware*, but there's a factory-only flash segment that tunes for body resonances, etc. Question: is the board from a JTV-89 a suitable replacement for a JTV-89F? * Per a thread some time ago, there was a rev to the hardware along the way. Does this factor in significantly?