Fulltone: Deja Vibe 2

[z80808]

I have a Fulltone Deja Vibe 2 which I believe is not phasing / swooshing as deep as it was when it was new: low effect level.  The pedal is 100% working, no clicks or pops, etc.  Note: The Chorus setting is much more noticeable than the Vibrato setting.  The Vibrato setting is too subtle.

What can I check, or change to restore the effect level?

Thanks!

[GibsonGM]

Welcome, Z!  Can you find and post a schematic to it?   That would give us some info to work from, to send you to check! 

[z80808]

Unfortunately, I could not find a schematic of the model I have.  But, I did find one schematic that may be close enough:

Circuit: http://www.pisotones.com/Univibe/Stratotrasto/FOTO3.jpg

Basically it is a copy of a Univibe.  Note: The schematic is missing the vintage / modern switch.

Inside my pedal: https://fr.audiofanzine.com/tremolo-vibrato-guitare/fulltone/deja-vibe-2/medias/photos/#id:76801

[Kevin Mitchell]

Check on the power supply. You should have upwards 17 or 18 volts going into the LFO circuit and about 15V for the signal. I wonder if the bulb isn't shining as bright due to lack of power. Otherwise I'd question the lamp-driver transistor which could be on it's way out.

If that checks out I would audio probe the signal to see if it's dying out somewhere in the phase stages.

But these are guesses.

-KM

[z80808]

Thanks for your response Kevin.  Will run the testing suggested and post my findings.

Z