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Post by windmill on Jun 3, 2020 17:54:25 GMT -5
So I was happily playing away on some surf tunes
Walk Dont Run, Pipeline, Baja and Squad Car but as I started on Surf Rider, instead of the nice clean reverb and trem, I started to get a distorted sound.
The distortion is good in its own way but it also occured through another amp that I have.
What would be the cause within the guitar's wiring of this ?
Any thoughts would be appreciated.
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Post by Peegoo 🏁 on Jun 3, 2020 18:11:44 GMT -5
A poor electrical connection, such as a dirty control pot trace or poor ground can introduce a gritty component into the signal. So can a failing solder joint that was not originally done properly. If you have a scope, that can help you track down the source of the noise.
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Post by Leftee on Jun 3, 2020 18:13:19 GMT -5
Same cable?
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Post by windmill on Jun 3, 2020 18:34:46 GMT -5
Same cable
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Post by funkykikuchiyo on Jun 3, 2020 19:41:02 GMT -5
A poor electrical connection, such as a dirty control pot trace or poor ground can introduce a gritty component into the signal. So can a failing solder joint that was not originally done properly. If you have a scope, that can help you track down the source of the noise. On a passive guitar with no high falutin' added circuits this the only thing it can be.
I'm sure you would've mentioned it, but if the signal seems strangely low, it could be a dead pickup or something and you're cranking the amp up to compensate and doing weird stuff there... but if you tried two amps, you might have already noticed that you were turning up to levels that should have been skull vibrating but weren't.
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Post by windmill on Jun 3, 2020 23:53:01 GMT -5
Thanks Funky for mentioning the passive circuit.
This guitar does have an active circuit with a battery. Assume it is to balance the output from the fender wrhb with the original pickups.
I havent checked the battery for a while.Maybe it is the problem.
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Post by Peegoo 🏁 on Jun 4, 2020 1:32:14 GMT -5
Ohhhhhh. Low battery!
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Post by windmill on Jun 4, 2020 1:46:25 GMT -5
The distortion happened almost instantaneously, so it could be the battery giving out.
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Post by Peegoo 🏁 on Jun 4, 2020 2:16:07 GMT -5
Yeah. Active circuits usually have an op amp chip that takes the signal from the pickups and boosts it. Op amps have a minimum voltage threshold; if power drops below that voltage level, the op amp can no longer generate a smooth sine wave and the sound goes all Rice Krispies.
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Wrnchbndr
Wholenote
Posts: 353
Formerly Known As: WRNCHBNDR
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Post by Wrnchbndr on Jun 4, 2020 18:16:39 GMT -5
Yup yup yup
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Post by windmill on Jun 5, 2020 2:48:10 GMT -5
yes it was a flat battery. Thanks for everyones help in diagnosong the problem. I wasn't looking forward to tryin to track a fault through the wiring on this guitar, it is a bit unique, and now I wont have too. Here is a couple of pictures    |
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Post by LTB on Jun 23, 2020 21:46:08 GMT -5
I wasn't looking forward to tryin to track a fault through the wiring on this guitar, it is a bit unique, and now I wont have too. I can see why! That is one "bowl of spagetti" you have there  |
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Post by Peegoo 🏁 on Jun 23, 2020 22:35:26 GMT -5
That is a *very cool* crusty/dusty SG.
Ooo, the stories that guitar could tell...
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Post by Riff Twang on Jun 24, 2020 5:31:09 GMT -5
I have a couple of those plastic covered mini-humbuckers from a mid 70's SG I once owned. If I recall correctly they sound great but are of a fairly low output.
Edited to add;
Great looking SG by the way, a real road warrior look to it.
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