Total Recall - Working but a few questions and observations (FIXED !!!)

[cleaninglady]

Thanks Brian for your help with the power.

It's working now but there are a few things...These are just observations in the hope it will help others if i can get them sorted with the help of the Forum.

I really like the pedal ; it has a life of it's own in some ways , which is great.

* Blend Pot - (using a Linear haven't changed out for Audio taper yet) , the delay signal only kicks in in the last couple of mm near fully CW travel of the pot. Before that it's a boosted version of the input signal and at extreme CCW it sort of cuts out.

* Level - The input signal is turning moving into overdrive / distortion very early in the pot travel. Eventually it overloads the circuit and everything sort of stops.

*Mod - Just doesn't seem to have much effect in either switch setting or when moving the pot.

*Delay - Is working fine.

*Feedback - Highly dependent on the calibration settings but works fine.

I'm mainly using the pedal for synths. I'm wondering whether my Level problem might be because of that.
Maybe i need to do the R2 220K change ?

I'm really not sure how well i calibrated everything and maybe these problems are a direct result of that , hopefully we can thrash it out here.

[lincolnic]

While synths definitely put out more level than guitars, your biasing might also be off, specifically on the gain trims. The instructions in the build doc for setting Gain 2 are actually wrong (I've mentioned this to Brian but it hasn't been updated yet). You want to set it so that the level is the same at pins 7 and 14 (or 15) of the NE570. I had a similar problem with my builds until I got that sorted, though I've only used them with guitar.

[cleaninglady]

Thanks , lincolnic !

Also , bizarrely , the inputs and outputs seem only to work if wired opposite to the schematic and build instructions.

When i noticed this and rewired Tip to Tip pads and Sleeve to Sleeve pad at J1 and J2 : nothing.

Do you think a blown 4558 could be the problem with that behaviour ?

I'll get back to it and have another look.

[cleaninglady]

All working now once i got my head around the power situation.

Chorus and Vibrato Effect is now noticeable and quite good.

The delay and feedback relationship is really nice and the pedal has a sort of life of it's own.

Really glad i kept on with this.

Thanks heaps for your help and thanks to Brian for the PCB's

[darrenw6000]

So the inputs and outputs are reversed at J1 & J2 just by the BLEND pot?

[darrenw6000]

?