Solved 3Verb dies after 2 days

Acursed

Hello

I put together 3Verb a couple of days ago and everything went smooth. The pedal worked like a charm for two straight days but suddenly died.
When I turn it on it produces a terrible noise (refer to the video bellow).

Externer Inhalt youtu.be

Inhalte von externen Seiten werden ohne Ihre Zustimmung nicht automatisch geladen und angezeigt.

Durch die Aktivierung der externen Inhalte erklären Sie sich damit einverstanden, dass personenbezogene Daten an Drittplattformen übermittelt werden. Mehr Informationen dazu haben wir in unserer Datenschutzerklärung zur Verfügung gestellt.

Any ideas what the problem may be?

Thanks in advance!

KlausBr

Hi,

check for sold colder joints or other loose parts, when it worked at first and then suddenly stopps, that´s the most probably cause!

Best regards
Klaus

cebersp

Hi,
A possibility is a bad solder joint.
Good luck Christof

thepedalarchitect

And please check if the IC is still fixed in its socket.

Acursed

Hi and thanks for all your suggesttions.

I resoldered almost everything and now the noise i gone but the effect is not working when turned on
It just gives a light boost to the volume but no reverb...

The IC is sitting very well in the socket.

Any ideas?

thepedalarchitect

Checkout the voltage on the IC - maybe it’s broken. Or you have to readjust the trimpot.

Acursed

Thanks for your answer!

Resoldered some resistors and the foot switch. One of the resistors lost a part of the shell and its exposed.
Now the pedal cuts off the sound when turned on.
I am expecting a delivery of resistors in the next days and i ll replace the damaged part but I am very close to call it a dead project

There is voltage on the IC so I guess it is working.
I checked continuity on the trimpots and everything looks fine

I ll keep you posted.

Acursed

Hello SlB

I am running out of ideas.
How can I readjust the trimpots?

Thanks in advance

thepedalarchitect

Take a small screwdriver and slowly and carefully turn it like pots.

Acursed

Ohh ok

Have done that already

Thank you

thepedalarchitect

You have to resolder all the resistors which are broken. Otherwise the pedals wouldn’t work.

Acursed

There is one resistor that i suspect is broken and i ll replace it at some point.

I dont know what kind of voltage measurements should I get when testing the chips while the pedal is on.

I measure the voltage on the components but I dont know if I have the right result... (or what range of values should I expect)

thepedalarchitect

Select DC Voltage on you Multimeter fix your black tip to ground e.g. you can put it in a screw hole of you enclosure.
Use your red tip of the Multimeter to measure the voltage on the IC, beginning at leg / contact of the upper left corner of the IC (upper side of the IC is marked with a notch).
Than measure 2nd leg till 8th leg.
2nd would be counterclockwise from the 1st leg. So left IC-Side hast leg 1, 2, 3, 4.
Right side you have to measure 5th till 8th leg. The 5th is the leg of the lower right corner of the IC. Go on till the 8th leg.

Post your voltage for each leg like this:

1:————-8:
2:———— 7:
3:————-6:
4:————-5:

Acursed

The effect it working again after replacing the faulty resistor.
Thanks for your help!

thepedalarchitect

Great news. So have fun with your pedal

Jetzt mitmachen!