Jiffyjammer Posted April 3 Share Posted April 3 (edited) I need some help with my Yamaha TRB 6P. I bought it about 14 years ago and I love it. It quit on me a few days ago. I'm not very technical but I took the electronics cover off and found a small red wire had came loose. I can solder but I have no idea where to reattach it. Any help would be greatly appreciated! It's the red wire at the bottom of the photo. Edited April 3 by Jiffyjammer Add photo Quote Link to comment Share on other sites More sharing options...
Doctor J Posted April 4 Share Posted April 4 I don't see a photo, but red is usually connected to the battery in active basses which would explain the bass being totally dead. Follow the wiring from the battery terminal, make sure that is connected to the PCB. From there, you should be able to follow the tracks in the PCB. Also, try emailing Yamaha to see if they have a schematic. Quote Link to comment Share on other sites More sharing options...
Gwilym Posted April 4 Share Posted April 4 There is a photo on this thread on TB, which might be helpful: https://www.talkbass.com/threads/yamaha-trb-4p-circuit.383919/ Quote Link to comment Share on other sites More sharing options...
ikay Posted April 4 Share Posted April 4 Can you add a photo of your bass? The TRB 6P preamp circuit seems to have varied a bit over the years. This pic for a '92 model on Reverb is different from the one in the TB thread. https://reverb.com/item/38797509-yamaha-trb-6p-six-string-bass-second-edition-1992-amber-ebony-fretless-neck-through-japan-hardshell 1 Quote Link to comment Share on other sites More sharing options...
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