Messages

hadn't thought of chopping up the wall wort... I was able to get a 2.5mm jack and all is fine... just threw me for a loop. 
afa 2.5 works on 2.1 - 'works' is the keyword there.  center prong is ground and as long as something is putting tension on your power cable in the right way it's fine... but jiggle your cable and it will disconnect... unless of course your version of the wall wort is actually 2.1mm and they make both?  Either way - thanks for the replies!

Posting out of curiosity as much as to perhaps providing 'the answer' to any other poor soul who finds themselves in my position.

so I typically use 2.1mm jacks on everything.  I bought the eh power adapter per spec for this build and captain obvious here took till now to figure out it employs a 2.5mm jack.  Now a 2.5mm power supply will physically fit into a 2.1mm jack... but ground will not make good connection... occasionally - your experience may vary. 

I don't know if they make this adapter in a 2.1 as well... but just wanted to post in hopes that perhaps someone might find the info as relevant as I am finding it right now.  cheers and thanks for - despite all my troubles - a very fun build.

scruffie - no worries, I learned plenty in the process. 

Scruffie/brians - as I suspected... really hard to find a source for these that isn't $10+ each... guess I'll have to go with smallbear as I know everything I get from steve is golden. 

the ebay user that you def can't get good ones from is 'good-module' - for what it's worth.  No response and I don't expect one.  Learned something there too.

thanks again for your help and putting out fun projects!

whew... I'm not completely daft.

thanks for the response wormboy and thanks for the followup brians.  I very much appreciate the preservation of my sanity.

I have switched the jumpers and 8 of 8 chinese mn3007 will not work in this build - yes I swept the bias trim on all.  4 of 4 others... one of which I'm certain is real, worked like a charm.  replaced the voltage reg with 15v... working great. 

I have contacted my ebay seller... his answer; good or bad, along with his ebay name will follow. 

I'd like to snag some more mn3007 for a madbean and electricfx flanger build... so if anyone can recommend a seller I'd appreciate.  I am aware of smallbear, and will go that route if need be, but I'd like to roll the dice again despite my experience.

thanks again for all the help guys!  You rock.

hello,
thanks for the reply scruffie.  I appreciate the education on mn3207 requiring neg voltage.  reading comprehension is obviously not my strong suit. 

not trying to raise a fuss... but honestly, I still don't see the note regarding 9v reg.  I'm going here: http://lectric-fx.com/product/celeste-chorus/ and clicking on the v1.2 pdf.  my parts list has two notes (asterisks)... one regarding extra cap for charge pump and one regarding high output pickup mod. 

at this point, I really hope someone else can confirm it missing because otherwise, out of honor, I'm going to have to punch myself in the face.  If it IS missing, I'd like to think my trials and tribulations can help someone so... there's that.

Either way, I'm in good shape and happy.  The 3207 sounds fine.  fairly quiet unboxed, works through the range of controls and sounds clean thru my battery amp. 
I generally don't keep things powered for more than 30 sec when things aren't going as expected so... perhaps that saved it.  Either way I am going to tempt fate and switch it out for a mn3007 for the extra headroom shortly. 

for the most part, this build went very smooth.  great pcb... hard to get it wrong - but I'm experienced at finding a way in that regard!

cheers,
mike

thank you for your responses gentlemen.  I very much appreciate it. 

here's how much of a dumb-ass I am: believe it or not I was aware that the mn3207 was lower voltage... but foolishly thought that somehow the jumpers were connecting to a 9v tap... not sure how I thought that was being accomplished... and pretty stupid that it wasn't a sign for me when I took voltage readings from it.  that said, isn't the pinout for 3207 and 3007 the same... so what do the jumpers do?

In the spirit of finding out where I went wrong and perhaps helping others, I have reread the build instructions: I still don't see any note about a dif regulator... am I blind? In retrospect I suppose it is pretty obvious, and I know that it is ultimately on me... but can someone rub my nose in it?

switched to a 9v reg... and believe it or not it did not fry my 3207.  works like a charm.  I can't thank you guys enough.  this thing sounds great.  has a unique quality I can't put my finger on.  not quite a ce2, not quite a small clone although I suppose there are settings where you will be right 'there'. 

cheers,

first off: thank you for your response.

the jumpers are between pins 2/7 and 3/6 if that makes sense.  across the chip.  hard to get a pic of that... but yeah.  I have some 3007 lying round but they are chinese and i figured I would go with a verified smallbear 3207 first... easy enough to swap out after it works and see if these are any good.  I do have some real 3007 in a few pedals but I don't want to put those in an unverified build. 

will shoot a pic of the under side next...

using LT1054 charge pump, 2n5088, 2n5457, MC78L15ACP, LM1458N, V3207, CD4047BE
didn't really sub anything other than bbd and using two resisters in series to get r5/r4.

not a lot of opportunity for flux connecting two pads together other than a handful of pads that are really tight

I've checked orientation of electro caps.  at the reg I get expected 15v~

I do get clean signal with the chorus knob the right way and flange/vibe switch set right.
I've traced my signal to pin 3 on the BBD.  I checked the jumpers for MN3207 - looks right to me!
checking pins 7 and 8 of the bbd i get some kind of static.  I've swapped out for another mn3207 and same result. 

Q: looking at other posted voltages... it says pin 1 of bbd should be around 15v?  but this is the ground pin... am I missing something?  I see ~0v on mine.
looking at r36 I get correct voltage... depending on the bias setting I get 7v~ and 7v~ at the trim.

I could really use a pic of the tracks... I can read the schem and spot check... but it'd be real helpful in case anyone would be so inclined as to have mercy on my pitiful soul.

VOLTAGES:
1) 4558
7.44
7.45
7.31
0
7.21
7.44
7.44
14.8

2) MN3207
.3
7.45
4.68
13.97
14.97
7.46
10.08
10.08

4) LM1458
6~
7.47
0
0
6~
7.45
4.7~
14.93

5) 1044

6) 78L15

7) CD4047
2~
13.08
6.3
14.98
14.98
14.98
0~
0
0
7.45
7.46
1.5
2
14.96

2N5457

only photobucket works... call tech support!!!!!!!!!!!!!!!!

posted a new one using google pics as other was yellowish... was able to post the new pic on facebook fine... but here: no luck. 

is there a restriction on new guys posting images?  got the img tags in there... is there something I'm missing?

once again proving that it is better to be lucky than skilled... I managed to figure it out on my own... thanks to those who considered helping me anyway.  Just hit it with a hammer a few times and voilla.  nice sounding build.  much smaller than my reg memory man.  probably could benefit from a second pass on the bias but good enough for today. 

ic6 was out of whack from ic7 as I had adjusted the trimmer in a wide sweep trying to see if I could dial out the high pitch sqeel... adjusted to the middle and got

ic6: 3005
1 -.1
2 -7.61
3 -6.47
4 -6.47
5 -15.16
6 -7.6
7 -3.28
8 -13.14

last one is ic9 not ic7 repeat and is a 4558... missed that

total recall

ic1: 4558
1 -7.57
2 -7.57
3 -7.52
4 -14.93
5 -7.47
6 -7.57
7 -7.59
8 0

ic2: ne571n
1 -13.9
2 -13.1
3 -13.1
4 -14.93
5 -13.1
6 -13.1
7 -3.86
8 -13.1
9 -13.94
10 -13.1
11 -13.1
12 -.5
13 -13.1
14 -8.93
15 -7.16
16 -13.1

ic3: 4558
1 -7.59
2 -7.59
3 -7.56
4 -14.94
5 -7.07
6 -7.16
7 -7.16
8 -.3

ic4: 4558
1 -7.59
2 -7.59
3 -7.56
4 -14.94
5 -5.34
6 -5.34
7 -5.36
8 -.3


ic5: 4558
1 -7.59
2 -7.59
3 -7.56
4 -14.94
5 -7.07
6 -7.16
7 -7.57
8 -.8

ic6: 3005
1 -.1
2 -7.61
3 -13.06
4 -13.06
5 -15.16
6 -7.6
7 -12.91
8 -13.06

ic7: 3005
1 -.1
2 -7.6
3 -6.93
4 -7.02
5 -15.16
6 -7.6
7 -5.35
8 -14.15

ic8: cd4047
1 -8.1
2 -7.06
3 -7.06
4 -0
5 -0
6 -0
7 -15.15
8 -15.15
9 -15.15
10 -7.61
11 -7.61
12 -15.15
13 -8.1
14 -.7

ic7: 3005
1 -???
2 -7.6
3 -6.58?
4 -7.02
5 -7.17
6 -7.18
7 -7.3
8 -.6