problem with optical tremolo

Did you measure Signal way? or try Audioprobe?

with one working same Pedal as comparison,it shouldn´t be so hard to find the failure

You could measure everything on working Pedal and compare with the non working.

everything means Signalway,links on PCB,Voltages during turn the Pots etc,etc.

Zitat von Hendrixianer

Did you measure Signal way? or try Audioprobe?

Yes, audio probe i must buy a condo.

Measure signal way : i will compare with the other pedal who is working

Measuring is always better than only compare,you could have a broken wire or bad connection,you could have a short circuit on PCB too!

don´t be afraid of measuring thing´s,it´s the only way to get real results!

You have no capacitors lying around? It doesn't have to be exactly 100n. The purpose of the capacitor in this setup is simply to block DC-Voltage. You can use everything between 10n to 10uF. You could even go lower down to 1n or something although this may change the sound you are hearing (cut bass) and might not be the best choice if you're checking the sound to be okay. But for a simple "sound / no sound" analysis it really doesn't matter, go with what you find in your drawer

Zitat von Moonshine

Vous n'avez pas de condensateurs qui traînent ? Il n'a pas besoin d'être exactement 100n. Le but du condensateur dans cette configuration est simplement de bloquer la tension continue. Vous pouvez tout utiliser entre 10n et 10uF. Vous pouvez même descendre jusqu'à 1n ou quelque chose comme ça, bien que cela puisse changer le son que vous entendez (couper les basses) et ne soit peut-être pas le meilleur choix si vous vérifiez que le son est correct. Mais pour une simple analyse "son/pas de son" ça n'a vraiment pas d'importance, allez avec ce que vous trouvez dans votre tiroir

Yes, i have a 10uf

Thanks, i will try for the first time an "audio probe"

Ok Hendrixs, i follow you

Do you have a bypass signal when the pedal is off?

Did you checked the orientation of your optocoupler?

Is your IC well placed in socket? If you have no proper fitting there could be an issue.

Did you double check value and orientation of capacitors?

On one of your Pictures,i have found that,please check,if i´m right:

But i don´t think this could result in No Sound,maybe no modulation,but yet not sure

It could be also the "-" of NSL-32 normaly for cathode there is a white Dot

Zitat von smellslikebleach

Do you have a bypass signal when the pedal is off?

Did you checked the orientation of your optocoupler?

Is your IC well placed in socket? If you have no proper fitting there could be an issue.

Did you double check value and orientation of capacitors?

All is Ok

Zitat von Hendrixianer

On one of your Pictures,i have found that,please check,if i´m right:

But i don´t think this could result in No Sound,maybe no modulation,but yet not sure

Look at the beginning of the topic

This is the orientation recommended by Klaus.

With the lettering in this direction:

In the same sense as my other pedal which works.

O.k,if all parts and orientation are o.k,wiring correct,Voltages right,why did your Pedal not work??

there must be a different to your working Pedal,right?

Your one and only Way ist to measure Signalway with Audioprobe/Multimeter,if all other o.k!

For clearance: Lettering of optocupler doesen´t matter for right orientation,they could be printed otherwise,only the marking for cathode is important!!

Zitat von KlausBr

the colored dot on the NSL-32 shows the "-" of the LED

I do audio probe.

I start with soldier IN (there is a sound) and after i move sound stop to the resistor R2 R3 mainly R3.

And after all over the pcb : no sound.

Zitat von Hendrixianer

What is the "colored dot" on the nsl-32 ?

What does it mean ?

This is the same sense of the other pedal which working

O.k,that´s a result,Now check Solder joints on R2,R3,C1,IC1 Pin2,measure on upside of those components if link from part to part is o.k.

Zitat von Nicolas

What is the "colored dot" on the nsl-32 ?

What does it mean ?

There must be a marked Point coloured ,on LED Side of optocuopler that means cathode (Minus)

Seriously - you should be a bit more grateful and humble here.

We want to help you…but don’t have to…

Micha gave you the tip to use an Audioprobe or measure the contacts between all elements. Please try this out.

Zitat von smellslikebleach

Sérieusement, vous devriez être un peu plus reconnaissant et humble ici.

Nous voulons vous aider… mais ce n'est pas nécessaire…

Micha vous a donné l'astuce pour utiliser une Audioprobe ou mesurer les contacts entre tous les éléments. Veuillez essayer ceci.

Hello, I made the audio probe. I gave Hendrix a result. There is no problem.

Thank you very much for your help. You are a living and helping forum, and direct live, thank you. Sorry, I'm a big beginner.

But I'm learning a lot of things, I just discovered how to use probe audio, it's great, thank you.

And i learn many things, also for others persons that could have a utility this topic/tread. Peace

If optocuopler is mounted wrong way (Diode &LED Side reversed) there´s no Sound after R3 /optocoupler! that´s why you must be 100% sure of right orientation NSL-32