madbeanpedals::forum

Projects => Tech Help - Projects Page => Topic started by: brucer on December 06, 2016, 05:27:03 AM

Title: Current Lover 2015 - Clean Signal Only/No Effect
Post by: brucer on December 06, 2016, 05:27:03 AM
So, I built a Current Lover 2015 ...
- it worked fine on my testing rig before boxing
- once boxed, it gave either silence (no signal) or ear-piercing tone when I operated the stomp switch
- probed it: faint testing rig tone when not touching the probe to the circuit and ear-piercing tone everywhere when I probed
- pulled it out of the enclosure
- checked parts and wiring
- re-ran testing rig:
   - faint testing rig tone in bypass, silence when engaged
   - probed and got input tone at input pad, but nowhere else
- took pictures and recorded voltages:

(http://imageshack.com/a/img923/3462/40HhUb.jpg)

(http://imageshack.com/a/img924/116/vfAULq.jpg)

(https://imageshack.com/i/poh7h52Hj)

- followed MB forum advice:
   - checked parts and wiring
   - reflowed solder joints
   - continuity-tested and short-checked all jumpers and off-board wiring
   - replaced all ICs and transistors with new ones from Small Bear
- re-ran testing rig:
   - clean tone in bypass
   - clean tone when engaged
- recorded voltages with new chip set:

(http://imageshack.com/a/img924/7093/c5KdTn.jpg)

Current status: using "S" and "R" to send and return signal to the PCB from testing rig, I get a clean signal only at "R" no matter how many times I follow the biasing instructions.  Rate light is flashing.

I'd really appreciate a hand with this.  Thanks!
Title: Re: Current Lover 2015 - Clean Signal Only/No Effect
Post by: Govmnt_Lacky on December 06, 2016, 03:11:57 PM
Tried to download AND to open the build doc directly. Each time I got a "damaged file" error.

Anyone else getting this?

ADDITION: Why are you getting 9V on Pin 13 of IC4? Should be seeing 0V on there and 9V on Pin 12. Typo??
Title: Re: Current Lover 2015 - Clean Signal Only/No Effect
Post by: brucer on December 09, 2016, 07:04:57 AM
Got some tech help responses on DIYSB, so sticking with that thread from here on out (http://www.diystompboxes.com/smfforum/index.php?topic=116251.0 (http://www.diystompboxes.com/smfforum/index.php?topic=116251.0)).