PT2399 Not Adding Delay

[dobo2001]

So I'm finishing up the Deep Blue Delay from Aion, and I can get the delay to work. The pedal passes signal fine, but when the pedal is on there's no delay effect. Schematic (https://aionelectronics.com/wp-content/uploads/2017/11/aion-vector-deep-blue-delay-documentation.pdf)

I've tested the Delay in at pin 15, and there's signal going into the IC. At pins 8 and 9, there's just a popping sound. Maybe this is the problem?

The IC is receiving 5V at pin 1, and I've swapped out the PT2399 to no avail. Pin 6 to Ground is measuring ~41K Ohms. Is this the problem? Maybe someone else can help? Thanks!

[patrick398]

Post up some voltages, someone might be able to spot something obvious. I can't open the link you posted but every schem i've seen of the deep blue doesn't have pin 6 to ground, it sets the delay time via a resistor and a pot to pin 4 (ground). Do you have a pot for the delay time or a fixed resistor? If your using a fixed resister it's possible you have the delay time set so short you can't hear the delay? Just a thought

[duck_arse]

The IC is receiving 5V at pin 1, and I've swapped out the PT2399 to no avail. Pin 6 to Ground is measuring ~41K Ohms. Is this the problem? Maybe someone else can help? Thanks!

there is something screwy with your link addy, a trailing bracket or something. anyway, like patrick says, voltages. and photos of your build, please.

when you say measuring ~41k, when is it? powered off, obviosly, but with the IC in or out of the socket? 41k all the time, or varies with pot setting? what is the max measured resistance of the pot? etc, etc, etc.

[bluebunny]

there is something screwy with your link addy . . .

Yep, trailing parenthesis, leading unprintable character and missing colon.  Try this instead.

[Boner]

So in that schematic, IC2_LPF1 (delay in) the op amps output is the input?

[duck_arse]

it is drawn that way, but the pin number corresponds to the oppy input in the datasheet, so it's likely aion will be here anytime now telling us he has corrected his drawing.