• Welcome to madbeanpedals::forum.

News:

Forum may be experiencing issues.

Main Menu
Menu

Show posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Show posts Menu

Messages - pierre67

#76
I'm taking a few pictues right now...i'll post'em in 5 min.
Thank you again !
#77
me again...
Let me try to explain a little better the problem...With feedback knob all the way down I get 1 repeat that sounds very distorted and gated, sounds allmost farty. Delay pot does work, it delays the farty sound and mix pot does what it does, increases the level of the flatulence  :P...As i turn feedback up, that single farty repeat turns to a motorboarding sound...like a long fart...I can tell that modulation works to as I can hear that the noise (the farty sound) wobbles (and led indicator is blinking and varies as I turn up the rate pot).
Slam does work too.
As suggested, I removed one at the time ICs 5, 3 and 2. The noise stopped when I removed IC3...getting only dry signal.
I tried changing all ICs and transistors, change all caps around IC3, checking diodes and caps orientation, solder bridges...and nothing...Next step is, I guess,to remove pots to check if there is not something wrong under them (but I doubt it)...

With all this frustration I forgot to mention that the first one sounds awesome.

What should I check next?
In any case thank you for your help and your patience, I know is not easy to read such a complicated description from somebody that actually do not speaks English very well... :-[ (spell check does miracles)
#78
update: the noise is gone when i remove IC 3
...audio probe..? :-[ way out of my skills  :P
#79
sorry...i did not answer completely...With the Mix knob all the way down the noise disappears and my dry signal sounds fine...
#80
Hi !!!
Yes, motorboarding in all settings. By the way the rate led works.
I allready checked for solder bridges, electrolytic caps orientation and everything seems fine...
#81
Hi !
I'm Pierre, this is my first post here...but I was reading around for a while...
Yesterday I build my first Zero Point SDX which worked right away; as I had a spare board and enough parts to build another one, today I decided to do it. The only thing different with this one is the caps, I wanted to try some Wima caps to see if they would make any difference in the sound. This one don't work  ???
The sound is gated and there is an aw full motorboarding noise...I can tell true the noise that control knobs do what they are suppose to do, as well for the switches...

I have done some voltage readings in the IC's if it can help :

IC1
1  4.77v    5  9.54
2  4.77      6  4.78
3  4.75      7  4.78
4  0.01      8  4.15

IC2 and IC3 same readings
1  5.02        9  2.52
2  2.5         10  2.52
3  0.01       11  2.52
4  0.01       12  2.52
5  1.28       13  2.52
6  2.45       14  2.52
7  0.28       15  2.52
8  0.80       16  2.52

IC 4
1  4.77        8  4.77
2  4.77        9  4.77
3  4.68       10  4.75
4  9.54       11  0
5  2.34       12  4.75
6  4.77       13  4.77
7  4.77       14  4.77

IC 5
1 between 2 and 5?
2 4.77
3  4.54
4   0
5  9.54
6  between 2 and 7 ?
7  4.54
8  3.97

Any toughs? :-[
Thank you !!!