madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: John S on August 18, 2016, 05:41:22 PM

Title: Current Lover (thin) issue
Post by: John S on August 18, 2016, 05:41:22 PM
I'm having trouble getting my Current Lover circuit to work. I haven't even gotten to calibrate it yet. After connecting to amp and guitar I'm not getting any sound (maybe a tiny bit) but LED 2 is on. I jumpered the loop tip pads and put a 47k in R1
Title: Re: Current Lover (thin) issue
Post by: BrianS on August 18, 2016, 06:08:46 PM
You're getting no pass thru with it off? Make sure you have your in/out wires from the board and jacks correct. Someone is going to ask you to post pictures and voltages on ICs/transistors so you might as well get that going. 
Title: Re: Current Lover (thin) issue
Post by: John S on August 18, 2016, 06:42:22 PM
I do get sound when it's bypassed. I'll measure tonight.
Title: Re: Current Lover (thin) issue
Post by: darrenw6000 on August 19, 2016, 12:39:52 AM
I'm having a distortion issue. I hear the flanging  but there is an overlay of distortion. All my voltages check out. I'm a bit stumped on this 1
Title: Re: Current Lover (thin) issue
Post by: John S on August 19, 2016, 01:55:20 AM
Here are my voltages
(//)
Title: Re: Current Lover (thin) issue
Post by: Stomptown on August 19, 2016, 02:46:00 AM
It looks like you have the wiring wrong.  The S (send) and R (return) pads at the bottom of the PCB are the PCB "in" and "out" respectively.  The I and O pads at the bottom are used to route the 1/4 jacks from the the top to bottom of the PCB so you don't have to use as much wire and have a cleaner looking build. If I've done a poor job of explaining follow the PCB trace in the build doc from J1 T and you will see it goes straight to the I pad. Same goes for J2 T and O.
Title: Re: Current Lover (thin) issue
Post by: John S on August 19, 2016, 11:48:38 AM
That makes perfect sense. I'll switch them and report back. Thanks
Title: Re: Current Lover (thin) issue
Post by: John S on August 19, 2016, 12:10:00 PM
Would someone mind checking out my voltages that I posted. I got some questionable readings. Thanks
Title: Re: Current Lover (thin) issue
Post by: sharp on August 19, 2016, 03:05:54 PM
Voltages looks OK to me. Only pin3 (input) of mn3007 way off, but it is a question of proper biasing. As well as pins 7-8 (output)
pins 12-13 of cd4013 is unused in current lover, so their voltages doesn't matter
Title: Re: Current Lover (thin) issue
Post by: John S on August 19, 2016, 05:06:41 PM
Cool. Thanks for checking
Title: Re: Current Lover (thin) issue
Post by: darrenw6000 on August 19, 2016, 09:19:57 PM
Had enough of trying to debug.
Title: Re: Current Lover (thin) issue
Post by: John S on August 22, 2016, 07:39:48 PM
Mine is working fine now. Thanks for the help.
Title: Re: Current Lover (thin) issue
Post by: John S on August 22, 2016, 07:42:05 PM
Quote from: darrenw6000 on August 19, 2016, 09:19:57 PM
Had enough of trying to debug. I wouldn't mind a refund I'm fu king pissed off
Are you getting the flanging effect with distortion? Have you calibrated the trimmers? Are you using high output pickups?
Title: Re: Current Lover (thin) issue
Post by: darrenw6000 on August 22, 2016, 08:18:23 PM
There is a flange but also sounds like it's clipping. I have biased it ok as I've made a couple of these last year exactly the same way with no trouble and I'm using single coils
Title: Re: Current Lover (thin) issue
Post by: selfdestroyer on August 22, 2016, 08:25:59 PM
Quote from: darrenw6000 on August 19, 2016, 09:19:57 PM
Had enough of trying to debug. I wouldn't mind a refund I'm fu king pissed off

I definitely understand your frustration, but I would really add these issues to your already open "Tech Help" thread. This way it will be easier to track your problems and help you narrow it down. Hope you get it going!

Cody
Title: Re: Current Lover (thin) issue
Post by: darrenw6000 on August 24, 2016, 12:14:58 PM
SOLVED..dodgy CD4049 wasn't it. Now working great!
Title: Re: Current Lover (thin) issue
Post by: darrenw6000 on August 24, 2016, 02:25:07 PM
Theres the culprit on the left compared to 2 genuine ones on the right. Thought it might be just that 1 but turns out it was the whole batch of 5 that i had. its got an appointment later with a large hammer, the stress its caused me this week!

(https://s4.postimg.org/imhgnaug9/20160824_132942.jpg) (https://postimg.org/image/imhgnaug9/)
Title: Re: Current Lover (thin) issue
Post by: darrenw6000 on October 08, 2016, 11:22:28 PM
Should it be the BE version of the chip or the UBE?
Having a little swooshing noise where by the flange signal can be heard going in and out of phase. It can be heard on the clean channel of the amp but is worst a high gain settings.