SOLVED Viceroy Build Not Working

[PraisetheSunn0]

Currently working on a Viceroy boneyard edition. Bypass works, but the effect does not come on, nor does the LED. The "Juice" switch LED does turn on though.

Q1 is a 2n5457, instead of the PF5102 that is called for. Would that perhaps be causing the problem?

Pics incoming

 

[PraisetheSunn0]

 

[jimilee]

Have you checked your voltages yet?

 

[PraisetheSunn0]

I have not. What should I check and how? My multimeter is at the ready

 

[TravisM]

Do you have covers on the pots in the second row? Also can you confirm no solder bridge in the + power and ground pad directly beside it?

 

[TravisM]

Q1 is a 2n5457, instead of the PF5102 that is called for. Would that perhaps be causing the problem?

Just Q1 or did you do Q1, Q2 and Q3 with that one?

 

[PraisetheSunn0]

Just Q1 or did you do Q1, Q2 and Q3 with that one?

Just Q1.

 

[PraisetheSunn0]

Do you have covers on the pots in the second row? Also can you confirm no solder bridge in the + power and ground pad directly beside it?

No covers but I don't think they're touching the board. No Solder bridge

 

[TravisM]

Just Q1.

I didn't double check the pin outs, but assuming they are the same, It wouldn't account for all the issues you are seeing with power. This is where you should start.

 

[TravisM]

Time to bust out the schematic and start with validating VCC and grounds. Start there and then you can check the gate to source voltage on the transistors.

 

[TravisM]

Also, I keep looking at this, did you put your DMM in continuity mode and validate there there isn't a connection from + to ground here?

 

[JamieJ]

Also, I keep looking at this, did you put your DMM in continuity mode and validate there there isn't a connection from + to ground here?

I agree. If you LED isn’t coming on then it could be a power issue.

You have used a red wire that connects to the negative power pad on the board. Is that going to the + or - of the power jack?

 

[jimilee]

I agree. If you LED isn’t coming on then it could be a power issue.

You have used a red wire that connects to the negative power pad on the board. Is that going to the + or - of the power jack?

This ^^^, also taking voltages will be the first step in making sure everything is getting power. Otherwise, we can run all day and get no where.

 

[ADAOCE]

No covers but I don't think they're touching the board. No Solder bridge

This has bit me more than a few times until I learned to cover the backs of the pots. Buy some dust covers or slide a piece of cardboard under them. Electrical tape will fail. It gets perforated by clipped leads.

 

[PraisetheSunn0]

Also, I keep looking at this, did you put your DMM in continuity mode and validate there there isn't a connection from + to ground here?

Surprisingly no, no Bridge there. I even redid the wires and soldering.

 

[PraisetheSunn0]

I agree. If you LED isn’t coming on then it could be a power issue.

You have used a red wire that connects to the negative power pad on the board. Is that going to the + or - of the power jack?

Yeah I mixed up the convention of red = positive, black = negative. My bad.

 

[PraisetheSunn0]

Yeah it's power related.

I'm reading negative voltage now. I'm not sure how. What am I doing wrong?

 

[music6000]

Yeah it's power related.

I'm reading negative voltage now. I'm not sure how. What am I doing wrong?

View attachment 23895

 

[PraisetheSunn0]

Man... maybe I'm not cut out for this pedal building thing. Maybe I shouldn't be allowed to use a Soldering iron or sharp objects either...

All my other pedals I've built had positive and negative leads on the other side...ugh. I'm an idiot

 

[music6000]

You just need to be pointed in the right direction!
That's why I always say '' A picture is worth a thousand words''
Here is a link where I made a Request to Members!
The first 2 listings at the top of the page :
https://forum.pedalpcb.com/forums/troubleshooting/