What did I do wrong?

Officer Bukowski · Post by **Officer Bukowski** » Fri Oct 07, 2011 5:47 pm

can you see anything I did wrong? I'm getting no LED or effected signal.

mysteriousj · Post by **mysteriousj** » Fri Oct 07, 2011 7:19 pm

It's a bit too hard to see where all the wires are going. Have you got a multimeter? check you have 9V on the pcb?

Also to check the led, get another led and put it across the the two legs of the led already wired in there, stomp the switch, if it still doesn't light then Reverse the led your holding and try again. If it doesn't light this time then there's something wrong with the switching.

candletears7 · Post by **candletears7** » Sat Oct 08, 2011 7:56 am

Can you post a link to the schematic or layout for the pcb you are using there?

Fuzzrociouspedals · Post by **Fuzzrociouspedals** » Sat Oct 08, 2011 9:19 am

Quadruple check how you wired the footswitch.
Then go over where the grounds are going.
Then check the positives.

culturejam · Post by **culturejam** » Sat Oct 08, 2011 11:15 am

For one, you don't need that resistor you have connected via wire to the footswitch. The current-limiting resistor is on the PCB.

Also, what MosFET are you using? The silkscreen shows the proper orientation for BS170. But 2N7000 has a different pinout.

Third: is the ground lug on the 9v jack connected to anything? It looks like it isn't. That would definitely make it no workey.

McSpunckle · Post by **McSpunckle** » Sat Oct 08, 2011 12:12 pm

It's hard to tell from the picture, but is the tip connection of the DC jack on the left side? It looks like its not hooked up to anything.

It looks like you may have wired ground to the NC switch.

Jero · Post by **Jero** » Sat Oct 08, 2011 1:29 pm

culturejam wrote:Also, what MosFET are you using? The silkscreen shows the proper orientation for BS170. But 2N7000 has a different pinout.

In case someone is using the 2n7000, just turn it around. The gait (center leg) will remain the same, why the source & drain will switch.

Jero · Post by **Jero** » Sat Oct 08, 2011 1:44 pm

I traced a wire (in orange) that I have questions about. It looks likes it's going from the output ground, to the dc +. Also, Danny mentioned, it doesn't look like your dc - is hooked to anything...looks like you bent it back to not hit the led. Not 100% on this, but (on the switch, orange circle) you might also try flipping the led - and the ground.

Officer Bukowski · Post by **Officer Bukowski** » Sat Oct 08, 2011 3:05 pm

The tab that I bent over on the power jack is the biggest tab. With the biggest tab on the bottom, I wired the top tab to the 9v+ lug on the board and the middle tab to ground. I had those two wired the other way around at first but it didnt work so I swapped them because I thought I did it wrong at first.

Culturejam sorry it's a pretty shitty picture there's no CLR there. It's a partial kit that fuzzy Fred bought fromyou that I'm building for him. I build one before and was all confident so naturally this one doesn't work first time around.

Officer Bukowski · Post by **Officer Bukowski** » Sat Oct 08, 2011 3:09 pm

Am I supposed to wire the big tab on the power jack to ground when I'm not using a bettery? I though that was what I did wrong last time I build one of these.

Officer Bukowski · Post by **Officer Bukowski** » Sat Oct 08, 2011 6:47 pm

Alright I fixed the wiring on the DC Jack and now it totally rocks. Sorry I made the same exact mistake I made before :facepalm:

the weird thing is now when I turn the SHO up all the way up and roll my guitars volume down it totally oscillates. Like fuzz factory type oscillation and when the guitars volume is just barely on at all it's all sputtery.

Other than that it sounds almost exactly like my real SHO and reacts with my other pedals the same.

Fuzzy Fred · Post by **Fuzzy Fred** » Sat Oct 08, 2011 7:08 pm

Officer Bukowski wrote:Alright I fixed the wiring on the DC Jack and now it totally rocks. Sorry I made the same exact mistake I made before

the weird thing is now when I turn the SHO up all the way up and roll my guitars volume down it totally oscillates. Like fuzz factory type oscillation and when the guitars volume is just barely on at all it's all sputtery.

Other than that it sounds almost exactly like my real SHO and reacts with my other pedals the same.

wait, so the one you made for me oscillates like this? :wha?:

FUCK YEAHHHHHHH :yay:

Officer Bukowski · Post by **Officer Bukowski** » Sat Oct 08, 2011 9:06 pm

Hmm this is interesting.. Ilikewater told me that his SHO clone acts as a tremolo when placed in a feedback loop. Right now I'm experiencing that with this pedal only when I turn the gain up all the way and my guitars volume down a bit. There's a loud pulsing sound and when you play the tremolo changes speed depending on how hard you pick. Aside from that it sounds totally normal.

What could cause this? Did I somehow inadvertantly wire a feedback loop? I checked the wiring on the 3PDT to see if any strands of wire were contacting another lug. It looks fine. I'm really stumped here.

Jero · Post by **Jero** » Sat Oct 08, 2011 10:17 pm

The large lug on the dc jack is ground, battery or not. The other two are positive. Both of them. Generally, the top one goes to your board and led +, while the second/middle goes to your battery +.

culturejam · Post by **culturejam** » Sun Oct 09, 2011 12:43 am

Officer Bukowski wrote:the weird thing is now when I turn the SHO up all the way up and roll my guitars volume down it totally oscillates. Like fuzz factory type oscillation and when the guitars volume is just barely on at all it's all sputtery.

Have you tried it this way with multiple guitars? Also, what guitar are you getting this with now?

Sounds to me like there is a grounding issue of some sort. I've never experienced this with any SHO or SHO-like circuit.

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