Aion Comet Diodes question

[spoontex]

I've just finished the build of a Boss DS-1 clone from Aion. But, they don't work.... I think that I mount the diodes incorrectly. You can check!?!?

thanks.

https://s19.postimg.org/w3kbcv29f/20160703_123907.jpg

https://s19.postimg.org/oc3leay43/ds1_pcb.jpg

[roseblood11]

You have a schematic and you can see both sides of the pcb. Why dont you check it yourself? 

[PRR]

> they don't work....

No sound? Hum? Smoke? Radio stations?

[aion]

The diodes look OK to me. What's the issue you are hearing?

[GibsonGM]

The diodes look OK to me. What's the issue you are hearing?

Or are you not hearing anything at all?  Or just clean sound, no distortion?   .....more data please....

[spoontex]

I've the diode mode, but they don't light... and the distortion is very soft and low volume. I check all and change the IC but nothing changes.



https://vimeo.com/173283724

[bluebunny]

You shouldn't necessarily expect to see the LEDs light up.  They're there for clipping, not one of Rob's lightshows.   

[spoontex]

Thanks.

Anyway the don't work properly.

[antonis]

Try to replace them with a pair of Ge or Schottky diodes..

Although I think something wrong happens with IC's gain..

[spoontex]

Voltages:

IC1:

1= 0,745V
2 = 0,744V
3 = 0,728V
4 = 0.00... mV
5 = 0,564V
6 = 0,730V
8 = 8,94V

Q1:

C=3,468V
B=3,91v
E=8,95

Q2:

C=0,000...mV
B=0,000...mV
E=0,000...mV

Q3:

C=3,136V
B=3,433V
E=8,95V

D1:

A=8,95V
K=0

D2:

A=4,46V
K=4,19V

D3:

A=4,19V
K=4,46V

D4:

A=4,46V
K=4,48V

D5:

A=4,49V
k=4,46V

Shematic:

https://s19.postimg.org/3uin2nm0j/schematic.jpg

[PRR]

Q2 sure has a problem (all zeros).

IC1 has a problem (mostly half-Volt).

Your problem is there, not "diodes".

Q1 Q3 are right if you have confused C and E pins. I don't know if the error is in the build or the reporting; it may not matter.