Vickozg Posted December 2, 2018 Share Posted December 2, 2018 Ok, I bought new JTV89f, it plays like a charm if used as pasive guitar. But I cant turn on, modality knob "clicks" when pushed in but nothing happens, no light around it so I can see it's turned on (it's pluggen in speaker, so cable is in guitar). Battery full, it's the only thing I can test on it, all green little lights show. Tried to set new firmware over Monkey, but "guitar side" of usb hub is blinking red all the time and it wont' recognize it. Usb side i constantly green. Any ideas? Quote Link to comment Share on other sites More sharing options...
brue58ski Posted December 3, 2018 Share Posted December 3, 2018 This could be 2 issues. 1)If the guitar side is blinking red, it's not "seeing" the guitar. I seem to recall that you need to have a 1/4" guitar cable plugged into it for it to "see" it. I could be wrong about that but don't quote me. 2) JTV Variax's are semi notorious for the model knob to not push the metal post it's on down far enough. Carefully take the model knob off using the spoon method. Be sure to protect the finish of the guitar better than the picture. Maybe use washcloths. Then push the metal post down to see if the models will now engage. If they do, you need to put something in the knob's post hole to allow it to push the metal post down further. That's all I got. Quote Link to comment Share on other sites More sharing options...
Vickozg Posted December 3, 2018 Author Share Posted December 3, 2018 Thanks, but I tried both oh them. I even tried few cables, and managed to pull knob out and slowly pressed it in. I can hear "click" when pushed down, but no sign of life. I wanted to update firmware, but Monkey/Workbench won't recognize it, probably because it's off. Quote Link to comment Share on other sites More sharing options...
Vickozg Posted December 3, 2018 Author Share Posted December 3, 2018 https://photos.app.goo.gl/SX1Ww1TLHny3FM92A Quote Link to comment Share on other sites More sharing options...
psarkissian Posted December 3, 2018 Share Posted December 3, 2018 @Vickozg, It can be one of four things. This won't be something you can fix yourself. Looks like it's still under warranty. Since you logged a Support ticket, they will let you know what the options are. I will be following this post. Also, in the video you are using a 1/4" TS tip plug. Try using a guitar cable with a 1/4" TRS tip. This is a guitar with active electronic, it works better using a guitar cable with a 1/4" TRS tip. Quote Link to comment Share on other sites More sharing options...
jgl444 Posted December 28, 2018 Share Posted December 28, 2018 Plugging a 1/4" jack into my JTV-89F worked for usb recognition. I have found that the guitar selector switch has to be set to Acoustic to turn it on. Quote Link to comment Share on other sites More sharing options...
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