Pork Barrel v4

[countzero]

Hi there everyone!

Here's the deal:

Good sound in bypass. When engaged LED lights up and I still have good sound, but no effect. flipping the switches gives me a subtle tone change, nothing more. Turning the knobs does nothing. EXCEPT the Depth knob, where I get a small "swish" when passing from and through around 4-5 o'clock. Adjusting the trimpot either gets me signal or no signal. Voltage readings are as follows:

Q1
E-4.4
B-4.8
C-9

Q2
E-4.7
B-0.5
C-9

Q3
E-0
B-2.1
C-9

Q4
E-0
B-0.3
C-7.5

Q5
E-3.6
B-4.2
C-8.9

I SEES!!!!

IC-1 JRC4558

1)5.39
2)5.39
3) 5.38
4) 0
5) 5.39
6) 5.39
7) 5.39
9

IC2- TL062

1) 0-0.2
2) 4.38
3) 2.3-5.7
4)0
5) 4.41
6) 4.4-4.6
7) 0-6
9

IC3-MN3101

1)8.92
2)4.55
3)0.2
4) 4.58
5) 0.2
6) 6.3
7) 2.98
0.5

IC4- MN3007

1) 8.9
2) 3.6-4.6
3) 4.3-4.7
4) 0.05
5) 0
6) 4.5
7) 4.6
4.6


+ Lead at DC = 9
9V in at board = 9
Ground in at board = 0

Whew! Here's some pics:





I've triple checked the wiring and parts. Of course at this point I'm seeing rainbow stripes on everything, so I will be more than happy if one of you can point out a huge, hilarious mistake that I've made.

Please let me know if there's anything else I can do to help you help me  

Thanks!!!!  

[countzero]

Bump

[jkokura]

Usually, your problem indicates that you have a problem with the chorus signal being grounded somehow. If you are getting good clean signal, you should start at C8 and trace your way through the chorus section up until the mix knob. If you have clean signal, it may be as simple as bad chips too.

jacob

[countzero]

Appreciate the response, Jacob. So do the transistor and IC readings check out? I have no idea what they should be. And FWIW I got the 3101 and 3007 off the eBay. Thoughts?

[jkokura]

I'm not looking so much at your readings as much as at your symptoms. My thought is that an audio probe may be your best tool, because you are getting sound its just not chorusing, it's probably in the path after c8 and before the mix knob.

Jacob

[bigmufffuzzwizz]

I had similar problems to what your experiencing. I bought my chips from ebay too, probably the same guy. I bought a package type deal, 10 of each for $18 with free shipping. The first pair I tried I got just clean signal..I spent a day tracing through w/ an audio probe, finally re-soldered the joints for the mn3101 and mn3007 chips. Still didn't work so I changed out the pair and got nice chorus signal..I tried the original pair again and they did not work..In this case it was the chips, might be the same with yours.
I've been meaning to go through and test how many of the 10 pair work...

[Scruffie]

I'm betting 3007/3101 too, your readings seem a little off on them.

Pin 8 on the 3007 is too low and Pin 2 should not vary like that, should be the same as the 3101s clock outputs.

[TNblueshawk]

Count you know Smallbear has those if you got screwed by evil bay.

[countzero]

I had similar problems to what your experiencing. I bought my chips from ebay too, probably the same guy. I bought a package type deal, 10 of each for $18 with free shipping. The first pair I tried I got just clean signal..I spent a day tracing through w/ an audio probe, finally re-soldered the joints for the mn3101 and mn3007 chips. Still didn't work so I changed out the pair and got nice chorus signal..I tried the original pair again and they did not work..In this case it was the chips, might be the same with yours.
I've been meaning to go through and test how many of the 10 pair work...

Crap. I have one other pair left to try out. Stupid me trying to save a little cash.

[countzero]

Count you know Smallbear has those if you got screwed by evil bay.

I saw that, I'm just trying to avoid $18+shipping for the 2 chips. 

Thanks again to everyone for the help. I'll let you know how it goes.