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Hi
I have just completed a Harbinger 2 and all seems fine apart from a squeal type of noise (which now I think is injected by the power supply part of of the board). My version of the board is Rev 1 and I wonder if this is much different to the Harbinger build instructions which seem to reflect the original PCB version. Thanks
Steve

Morning
I have seen something like this for the Harbinger one but I never found an answer. I am sure someone has a better idea than me about where I should be concentrating my efforts!
My Harbinger two build does produce the correct output sounds, as far as I can tell, but there is a squeal which follows the volume and modulation of the sound, even without a signal input. To give some idea of the nature of the sound it seems to be like a sawtooth wave at around 2kHz.  Most of the voltages around the board are generally about 5-10% below those in the table in the build doc, but some of the voltages are quite a bit out e.g. IC1 pin1 +4.4V, pin 6 +4.7V, pin 7+3.5V; Q12 B +4.9, E +4; Q14 S +0.45 and the others voltages are more or less as specified, if a bit lower as mentioned above. I use a bench power supply and I have swapped the IC with another new one but no difference. I built the harbinger one some time ago without any problems (and loads of other pedals too, which have all worked!).
I wonder if anyone could give me an idea of what it could be please?
Thanks

Hi
I have got the SDX all connected up and whilst it passes signal, and it adds a bit of gain, there is no delay effect in any switch or pot position. I have checked all of the resistors and caps (even though I checked them on assembly) but it all seems in order. I spotted another thread which showed voltages around the ICs. Here I have clearly got something wrong. I am getting:
IC3 - PT2399
Pin 7 - 4.57V
Pin 11 - 0.51V
Pin 12 - 4.68V
Pin 13 - 3.16V
Pin 14 - 0.1V
The other voltages are broadly in line with what I have seen tabled elsewhere.
Occasionally it does seem to pass some signal but it's crackles and pops which seems like it's generated by some random noise!
Any ideas would be much appreciated.
Cheers
Steve