psarkissian

10 year old tubes,.... sounds like it's over due for a swap out of all of them, and a biasing of the power tubes. Have it done at a Line 6 authorized service center. https://line6.com/find/service_center/

Variax 300 Electric.

Spray was probably not a good idea. It is sounding more like it may be a a couple of solder points. Have a Line 6 authorized service center check it out. https://line6.com/find/service_center/

MIDI timeout error. Memory buffer or an interface device may be involved in the error. Check connection and any interface devices. Put the amp portion of the unit into on,... but in Standby mode. Disconnect any USB hubs, connection must be direct to the computer through MIDI to USB interface,... and then try again.

Workbench HD for JTV, Standards and Shurikens using firmware v2.00 or later. For original Workbench you will need an earlier computer or a 'look back' software application to use original Workbench, since it is out of date with current 64-bit processing of today's computer OS'.

Take them to a Line 6 authorized service center in your area. They can check it out and have experience with Line 6 products. Self repair is not recommended and is ill advised. https://line6.com/find/service_center/

"... could it be the Tubes?", maybe. Depends on the age of the tubes and playing time of the previous owner. Also depends on whether or not they are the specified tubes and bias. Review my posting on tubes in DT series amps. Review my posting on tubes in DT series amps.

Sure. :)

Under the bridge is a ground trace that goes to a green wire and terminal,... that is the ground plane. Needs to connect to that.

Not certain with the Graph Tech, but typically, the saddle acts as signal return when contacting the piezo outer casing. If the ground planes are set up correctly.

Not certain with the Graph Tech, but typically, the saddle acts as signal return when contacting the piezo outer casing. If the ground planes are set up correctly.

No. best to use TRS as tip= signal, ring= +Vdc and sleeve is the signal return (ground). If using TRS does not fix, then something else is going on, and should be checked out by a Line 6 authorized service center.

There are piezos available for earlier version Variax. It may have to be special ordered. Log a Support ticket in your Line 6 account.

Intermittent solder points. A Line 6 authorized service center in your area can deal with it. They will have the experience with these and access to service info. https://line6.com/find/service_center/

Are you using a cable with a tip/ring/sleeve plug on it? Is the battery fully charged?

"You don't have the USB driver for my interface. ",... if it is out of date for your computer OS selected, it might not show up in the Downloads list. "Anyone know how to get the old Workbench to work in Windows 10? ",... use one of those apps that will sit on Win 10, but runs functions from previous OS' of the past. Seems to be the only way at this time. Thumbs up on it all. "Ontari-ari-o ..." as the Trent Severn song goes.

We don't dump any software. It's still there on the Downloads page. To connect to Workbench HD, updating firmware to v2.00 or higher is required. --When you connect the JTV-59 to Monkey, does the JTV icon come up on the Monkey display? --And does the Flash version come up on the display? --How are you connecting it?

What silverhead said. hurghanico,... as for rolling back to v1.90,... no can't be done, I've tried it. Standards are post JTV types that have differences in the program, so Monkey won't roll back before v2.00 firmware. Make certain that it comes up as a Standard icon in Monkey,... then re-Flash the firmware. If it still doesn't sound right after, then have the set-up checked by an authorized Line 6 service center in your area. If the JTV icon comes up, then it was programmed incorrectly. If you are in the US, sending it to Line 6 for reprogramming or board replacement at a Line 6 service center in your area would be two options. If outside the US, then the Line 6 service center in your area should be able to get a replacement board. Y22xx,... Indonesia 2022. Not the last, some in 2023,... haven't seen many of those across my bench,... maybe when they are couple years old and need servicing. https://line6.com/find/service_center/

700,... looks like early 2005, a couple years before my time here.

Check the Downloads page on the Line 6 site and see what the computer OS compatibility is for Monkey.

Yes, 2020,... but not July. The next two digits are an internal number for us to track with.

Log a ticket with Line 6 support on that M2 chip.

:)

I will have to check when I get back to work. Office is closed til Monday, as the power is off due to the winds and fires in Los Angeles right now. Google translation,... Tendré que comprobarlo cuando vuelva al trabajo. La oficina está cerrada hasta el lunes, ya que no hay electricidad debido a los vientos y los incendios que hay en Los Ángeles en este momento.

Should be as straight forward as holding down the Tap button on the 500X to put it into tune mode, then push Tap again to take it out of tune mode.