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DIY Stompboxes => Building your own stompbox => Topic started by: Seven64 on July 10, 2011, 03:27:34 AM

Title: 0 ohm resistor as jumper
Post by: Seven64 on July 10, 2011, 03:27:34 AM
so i just built matsumin's tubescreamer vero:

http://www.aronnelson.com/gallery/main.php/v/ulysses/ulysses_layouts/ulysses_ts_srv_special/ulysses_ts_srv_special_vero_1_01.gif.html?g2_imageViewsIndex=1

and got it all together.  it was not passing sound at all, and when engaged the LEd would only turn on when the volume knob on my guitar was between 1 and 3.  other than that it would fade off.  i have the 3pdt switch wired as said in the faq without the grounded bypass.  i used a 0ohm resistor as the jumper for when the switch is in bypass, and got out my multimeter.  i had continuity at the resistor, but not at the place where the jacks were.  i have the part that is supposed to be wired to the pos battery terminal (pole 4) on the 3pdt switch ran to a empty hole right next to the +9 on the vero.  i cut that wire, and get a very faint bypass signal, but nothing from the circuit.

i have continuity from sleeve to sleeve, but thats about it.
Title: Re: 0 ohm resistor as jumper
Post by: R.G. on July 10, 2011, 11:18:19 AM
? ? ?
Title: Re: 0 ohm resistor as jumper
Post by: Joe Hart on July 10, 2011, 11:37:22 AM
Strange. Can you post pictures?
-Joe Hart
Title: Re: 0 ohm resistor as jumper
Post by: newfish on July 10, 2011, 02:00:28 PM
You probably *have* checked this a couple of times already, but are you *sure* your 3PDT switch is the correct way round?

Doesn't explain the LED lighting issue, but it's one less thing to eliminate.

Title: Re: 0 ohm resistor as jumper
Post by: LucifersTrip on July 10, 2011, 03:50:37 PM
Quote from: Seven64 on July 10, 2011, 03:27:34 AM
so i just built matsumin's tubescreamer vero:

http://www.aronnelson.com/gallery/main.php/v/ulysses/ulysses_layouts/ulysses_ts_srv_special/ulysses_ts_srv_special_vero_1_01.gif.html?g2_imageViewsIndex=1

and got it all together.  it was not passing sound at all, and when engaged the LEd would only turn on when the volume knob on my guitar was between 1 and 3.  other than that it would fade off.  i have the 3pdt switch wired as said in the faq without the grounded bypass.  i used a 0ohm resistor as the jumper for when the switch is in bypass, and got out my multimeter.  i had continuity at the resistor, but not at the place where the jacks were.  i have the part that is supposed to be wired to the pos battery terminal (pole 4) on the 3pdt switch ran to a empty hole right next to the +9 on the vero.  i cut that wire, and get a very faint bypass signal, but nothing from the circuit.

i have continuity from sleeve to sleeve, but thats about it.

i have to admit, this is a bit difficult to follow....but the first thing to do here would be to bypass the switch completely and see if it works first.
Title: Re: 0 ohm resistor as jumper
Post by: Seven64 on July 10, 2011, 09:40:47 PM
(http://img.photobucket.com/albums/v227/Toomuchtherapy104/SAM_0030.jpg)

(http://img.photobucket.com/albums/v227/Toomuchtherapy104/SAM_0034.jpg)

i marked one black with a sharpie so when i twisted them coming off the pcb together i knew which one was 'out'