Grateful Dead Music Forum

A place to talk about the music of the Grateful Dead 

 #133482  by waldo041
 Wed Oct 23, 2013 7:58 pm
ccw3432 wrote:I wouldn't give up on this yet. See my post above. If I was correct there, your problem is isolated to a very small segment between the switch and the OBEL jack (assuming your TRS cord, junction box, and everything post OBEL jack is functioning) . It could be as simple as your OBEL jack grounding out on the shielding paint you put in. Pull the jack, double check the wiring and plug the guitar into it while it is removed from the guitar body. See if you get sound.
gr8fl4295 wrote:
waldo041 wrote:OBEL Jack = Switch has sound on one side and No sound on the other side. Volume pot does nothing.
Output Jack to amp = Switch has No sound on both sides of the switch. Volume Pot does nothing.
The tip of the OBEL jack is the "Send" which will have sound with a mono cable, and so will the Output jack. However, when the Output jack is used the volume pot will work. Not so with the OBEL jack because it is placed before the volume pot and since the Tip/Send is tapped before it explains why the volume pot would not work. But he only has sound in what appears to be the OBEL jack because the volume pot does nothing. And the Output jack does nothing. What is confusing to me is the fact that the volume pot does not work in either jack with just a mono cable, but works when he hooks it all up to a junction box.

Last edited by waldo041 on Wed Oct 23, 2013 8:09 pm, edited 2 times in total.
 #133483  by TI4-1009
 Wed Oct 23, 2013 7:59 pm
"Those who fail to learn the lessons of history are condemned to repeat them." -Santayana :-)
 #133484  by ccw3432
 Wed Oct 23, 2013 8:33 pm
Ok. I read through the thread prior to posting but I failed to pick up on that point. Sorry for the screw up.
 #133485  by tcsned
 Wed Oct 23, 2013 8:37 pm
TI4-1009 wrote:"Those who fail to learn the lessons of history are condemned to repeat them." -Santayana :-)
". . . and those that learned the lessons of history are doomed to sit around helplessly while those that did not learn the lessons repeat them" - history nerd joke :-)
 #133498  by gr8fl4295
 Thu Oct 24, 2013 7:59 am
Gonna drop off the guitar tonight to a guitar repair guy here in Austin.
Hopefully he will understand what's going on....or not going on.
I have the Tiger schematic and all the gear ready for him.

Wish us luck! Hopefully he won't have to re-wire the entire thing.

Thanks for all your help guys. I absolutely appreciate the discussion.
 #133516  by TI4-1009
 Thu Oct 24, 2013 7:30 pm
Make sure to pick his brain on what he found and how he found it!
 #133631  by TI4-1009
 Tue Oct 29, 2013 2:19 pm
 #133822  by waldo041
 Sun Nov 03, 2013 4:22 pm
gr8fl4295 wrote:HA!
The OBEL is still not working. The guitar tech here in Austin spent a few hours poking and prodding at the connections, switches, and wires. He could not figure it out.
So, I'll be arranging a drop off with Leo in Dallas in the near future.

Posted in another thread.

 #133884  by gr8fl4295
 Tue Nov 05, 2013 9:59 pm
Yes, sorry. To my dismay, the guitar still has a wiring problem. Hopefully I'll get up to Dallas in a couple weeks to see if Leo can crack the code.
Thanks guys.