Build Your Own Clone Message Board

It is currently Thu Mar 28, 2024 11:27 pm

All times are UTC - 6 hours




Post new topic Reply to topic  [ 6 posts ] 
Author Message
PostPosted: Wed May 20, 2015 1:29 pm 
Offline

Joined: Wed May 20, 2015 1:17 pm
Posts: 13
Hey guys, I need some help on this one. I've built the 5 Knob compressor. It works beautifully except I get no sound in bypass mode.
Engaged I get beautiful compression. Dis-engaged I get nothing. Can't figure out whats wrong.

Attachment:
IMG_2330.jpg
IMG_2330.jpg [ 647.08 KiB | Viewed 3593 times ]


Top
 Profile  
 
PostPosted: Wed May 20, 2015 1:44 pm 
Offline
Moderator
User avatar

Joined: Sat Mar 04, 2006 9:15 pm
Posts: 7662
Location: Ohio
Let’s start by checking the stomp switch. Take a look at this thread…

viewtopic.php?f=10&t=31545

_________________
"It’s your soldering."


Top
 Profile  
 
PostPosted: Thu May 21, 2015 8:53 am 
Offline

Joined: Wed May 20, 2015 1:17 pm
Posts: 13
Checked and the footswitch is good.


Top
 Profile  
 
PostPosted: Thu May 21, 2015 9:06 am 
Offline
Moderator
User avatar

Joined: Sat Mar 04, 2006 9:15 pm
Posts: 7662
Location: Ohio
With the pedal in bypass mode check for continuity between lug 8 of the stomp switch and the Tip connection of the output jack. If you have continuity there check between the Tip and lug 9 of the stomp switch. If you have continuity there check between the Tip and lug 4 of the stomp switch. If there is no continuity in any of these checks you’ll need to check your soldering.

_________________
"It’s your soldering."


Top
 Profile  
 
PostPosted: Thu May 21, 2015 9:12 am 
Offline
Moderator
User avatar

Joined: Tue Jan 02, 2007 1:24 pm
Posts: 16196
Location: Albany, NY
When the effect is engaged, the signal goes from footswitch lug 4 through the footswitch to lug 5, into the effect circuit, then back out again to lug 7, through the F/S to lug 8 and on to the output. From your description, this all seems to be working perfectly. In bypass mode, the only difference is that the signal goes from lug 4 down to lug 9 via a trace on the footswitch mini-PCB, and then to lug 8 through the internal connection of the footswitch. So it would seem that your problem pretty much has to be in the connections between lugs 4, 9 and 8, including the footswitch itself and the mini-PCB. I would try re-flowing all of the solder joints in that area and see if that takes care of the issue.

EDIT: Looks like Stephen & I are on the same wavelength here. The lug 4-9-8 connection is the key. You know you're good from the input to lug 4 and from lug 8 to the output, since the pedal works when engaged and these circuit paths are common to both bypassed and engaged modes.

_________________
“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2


Top
 Profile  
 
PostPosted: Thu May 21, 2015 1:53 pm 
Offline

Joined: Wed May 20, 2015 1:17 pm
Posts: 13
BINGO! Re-flowed lug 4 and that seems to have done the job. I don't know why I didn't think to check the continuity of that path. Makes sense. Thanks guys!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group