hey
just finished my rocktave divider and.... no sound at all :icon_sad:
so here is the story : i use the ggg layout and the Craig Anderton process, with the lorlin divisor mod.
http://www.generalguitargadgets.com/index.php?option=com_content&task=view&id=130&Itemid=26
http://hammer.ampage.org/
i've been very concentrate during populating the board, checking all resistors values with my meter, checked twice capacitors polarity...
i have made one mistake : diodes in the wrong way...i realized that after my first try... :-\ i don't know if that is the reason of my problems by now ?
here is the pic of my board :
http://picasaweb.google.fr/lh/photo/Rytx0QXsMmEsGYIW_zsABA?authkey=Gv1sRgCMGlprS1joy8Pw&feat=directlink>
dc voltage : 9,32 V
all measures pots down an lorlin to pos 1
Q1 :
C : 3,73
B : 8,66
E : 9,32
Q2
C : 1,93
B : 8,64
E : 9,32
D1 :
A : 0
C : 0,02
D2
A : 0
C : 9,31
IC1 (4136):
1 : 0,08
2 : 0,06
3 : 0,70
4 : 0
5 : 0,61
6 : 4,18
7 : 8,60
8 : 0,54
9 : 0,58
10 : 9,32
11 : 0,58
12 : 0,06
13 : 0,06
14 : 0,09
IC2 (NE571N) :
1 : 0
2 : 1,81
3 : 1,79
4 : 9,31
5 : 1,83
6 : 4,29
7 : 4,29
8 : 1,83
9 : 1,83
10 : 4,22
11 : 1,79
12 : 1,83
13 : 0
14 : 1,82
15 : 1,82
16 : 0,03
IC3 (4013)
1 : 9,32
2 : 9
3 : 0
4 : 3,64
5 : 0
6 : 0
7 : 0
8 : 0
9 : 0
10 : 9,32
11 : 0
12 : 0
13 : 9,32
14 : 0
IC4 (4017)
1 : 0
2 : 0
3 : 0
4 : 0
5 : 0
6 : 9,32
7 : 0
8 : 0
9 : 0
10 : 0
11 : 0,01
12 : 9,31
13 : 0
14 : 3,60
15 : 0
16 : 9,32
any ideas ?
4136 does not work with ggg layout !!! (thanks jimbeaux)
Dude, did you get your Rocktave working??
If so i'd really like it if you could post me some sound clips. I've been building mine for 14 months, with less than complete success! I'm just wondering if it's worth persevering with!
hi there,
have you fix your problem ? Me i done some mistake ; i put rc4136 instead of tl074 type dean 's layout ; i reversed the diodes and i forgotten the jumper up to ic1. I do all the corrections, even changed all ic's but no sound here. But I have not added the mod with cd4017. Thanx for news * greetings
Welcome amapolasola,
The original posts in this thread were from 2009 and 2010, long time ago! I recommend using this thread as a guide and making a new thread for help!
http://www.diystompboxes.com/smfforum/index.php?topic=29816.0