Sabbath- no sound when engaged

[megatrav]

Back at it again, building things wrong.
I got this guy finished and was getting full bypassed signal, but nothing when engaged.
I double checked all the resistors and had to swap a few.
Now that I have that corrected. I am still not getting anything when it is engaged. As far as I can tell, the transistors are in the correct way.
is it possible that it is the footswitch or should I be checking something else?
I have my multimeter standing by!
Any advice is appreciated!

here are some pics

 

[Coda]

It’s hard to see C7 and C12; are they oriented correctly?

 

[megatrav]

It’s hard to see C7 and C12; are they oriented correctly?

Looking closer at them, I can’t tell! Maybe I am using the wrong type here? I don’t see a line or an indication that they are in the right way?

 

[megatrav]

I took one of them out and this is up close. Can anyone tell which side is positive/negative?

 

[megatrav]

I think they might be non-polarized. Which is probably why it doesn’t show

 

[Coda]

I took one of them out and this is up close. Can anyone tell which side is positive/negative?View attachment 12009View attachment 12010

Usually, the longer leg is the positive side...

 

[peccary]

Pretty sure that "NP" means non-polarized, so it doesn't matter which way it's pointing. Did you check your wiring to make sure you've got the t/s connections correct?

 

[megatrav]

Pretty sure that "NP" means non-polarized, so it doesn't matter which way it's pointing. Did you check your wiring to make sure you've got the t/s connections correct?

By t/s connections do you mean the jacks? If so, wouldn’t it not work in bypass if that were the case?
Sorry if you meant something else, if so please tell.
I think the wiring is correct, but I assume having non polarized caps in there will cause it to not work?

 

[Coda]

By t/s connections do you mean the jacks? If so, wouldn’t it not work in bypass if that were the case?
Sorry if you meant something else, if so please tell.
I think the wiring is correct, but I assume having non polarized caps in there will cause it to not work?

Sometimes, sometimes not. In this case, judging from the schematic, both of those capacitors should be polarized.

 

[fig]

Is the footswitch wired correctly? I can't see it very well.

 

[fig]

Sometimes, sometimes not. In this case, judging from the schematic, both of those capacitors should be polarized.

Those should work.

 

[dmnCrawler]

Which BC184 are you using. If it is the one from tayda it is probably a BC184L which is a different pinout and will cause you to have no sound.

 

[fig]

Which BC184 are you using. If it is the one from tayda it is probably a BC184L which is a different pinout and will cause you to have no sound.

Snap!

 

[peccary]

By t/s connections do you mean the jacks? If so, wouldn’t it not work in bypass if that were the case?
Sorry if you meant something else, if so please tell.
I think the wiring is correct, but I assume having non polarized caps in there will cause it to not work?

Sorry, yes that is what I meant. By t/s I mean tip/sleeve. Seems to be a common mistake people make so I just wanted to make sure you've checked them since there aren't any photos of them.

Bipolar caps are fine to use, they don't have to adhere to the +/- markings and can go in either way.

 

[megatrav]

I took one of them out and this is up close. Can anyone tell which side is positive/negative?

Which BC184 are you using. If it is the one from tayda it is probably a BC184L which is a different pinout and will cause you to have no sound.

well that is in fact the one I am using. So, I will flip that and the right caps in there and hopefully it’ll be good to go!

 

[peccary]

I took one of them out and this is up close. Can anyone tell which side is positive/negative?

well that is in fact the one I am using. So, I will flip that and the right caps in there and hopefully it’ll be good to go!

Bipolar caps don't have a +/- side and as long as they are still functioning you should be able to use them. It doesn't matter which way you insert them.

 

[fig]

@Coda

The non-polar or bi-polar electrolytic can be used without regard to polarity. I have read that it's not a good idea to use them in power filtering, but I am not versed enough to say for certain.

 

[Coda]

@Coda

The non-polar or bi-polar electrolytic can be used without regard to polarity. I have read that it's not a good idea to use them in power filtering, but I am not versed enough to say for certain.

I think that’s what I was thinking. I remembered reading it somewhere...

 

[dmnCrawler]

I took one of them out and this is up close. Can anyone tell which side is positive/negative?

well that is in fact the one I am using. So, I will flip that and the right caps in there and hopefully it’ll be good to go!

its not just a flip. You have to put it in kinda sideways. It needs to be pics, 2-3-1.

 

[megatrav]

its not just a flip. You have to put it in kinda sideways. It needs to be pics, 2-3-1.

View attachment 12014 View attachment 12015

Thanks for that, I was referencing the data sheet and noticed that too.

I did already order the polarized caps so I’ll just go ahead and use those. I ended up damaging the ones I removed. So, fresh caps can’t hurt.