Hydra Delay no signal

[GilesYoung]

Hi everybody,

So I’m building this ambitious delay pedal unit that I want to use for my vocals, based around the Hydra Delay kit.

I soldered the whole kit very carefully (also measured all resistors before installing) but in the end when I wanted to test it - it didn’t work at all (not even signal through the dry/wet pots). The led doest light up, and when I bypass the pedal I get normal signal.

Did anybody experience this same problem and was able to fix it?

I already did some troubleshooting with an audio probe, the FV-1 chip has signal coming through on pin 1 and 28. But I couldn’t find out where the signal stopped.

I also reflowed all the solder points (including the FV-1).

Where do I need to look, or what am I missing?

Below are some pics.
Sorry for the cable mess, it doesn’t help with finding the problem, I know.
Also tried to clean the board with alcohol, but it only made it look worse. And yes I know that 1n cap looks bad as well, but that happened when troubleshooting, so that shouldn’t be the problem either).


Anyway, hope someone can point me in the right direction on where I should be looking!
Thanks

 

[KR Sound]

Are your ICs upside down?

 

[Erik S]

Are your ICs upside down?

Yup

 

[GilesYoung]

Just turned them around, but still no change.

 

[Tommygun011198]

If the led isn’t turning on then it’s either in backwards or it’s not seeing power and connecting to ground. The solder joints on the 4 footswitch pads look a bit sketchy, maybe check them with a multimeter.

After that I’d trace the power line to the regulator, and ensure that 3.3V is coming out and reaching the FV1

 

[Tommygun011198]

Here’s the schematic in case you don’t have it

 

[GilesYoung]

Thanks! I see I wrote a fault, I mean the led does light up.

The footswitch wires are good.

I measure 9.02cv coming into D1, but 0.030v coming out. That doesn’t seem right, does it? Is there a chance the diode is bad?

 

[Nostradoomus]

It's pretty much impossible to see anything because of the wiring. That D1 reading is definitely off. I would hazard a guess it isn't the diode as you have it oriented correctly, could be a short or mis-wire somewhere further down the line. It's a spaghetti mess of wiring so it's up to you to map it and trace potential problems. Your soldering looks fine though, from what I can barely see.