Author Topic: Autobahn  (Read 3986 times)

jimilee

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Re: Autobahn
« Reply #15 on: February 08, 2013, 07:01:49 PM »
do you check for solder bridges with a magnifying glass? I had this same issue and turns out there was a bridge on the wire going to one of the pots
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wgc

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Re: Autobahn
« Reply #16 on: February 08, 2013, 07:13:15 PM »
Double check to make sure you didn't miss a jumper under the ic.

Also you can sometimes fry a backwards part or damage during removal.  So when you reverse and replace, doesn't work for a different reason.

I just spent 2 hours last night troubleshooting a sho'nuff v2 pcb.  Actually a very simple circuit but I had to actually ohm it out.  First an open circuit diode, and then a bad trace to the bypass mode at the on board 3pdt.

Mind you I built a cavedweller and slow loris earlier in the week with no issue..!

Good luck!
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blue_tokai

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Re: Autobahn
« Reply #17 on: February 08, 2013, 07:15:18 PM »
do you check for solder bridges with a magnifying glass? I had this same issue and turns out there was a bridge on the wire going to one of the pots

+1

Easy to have a solder bridge here. I've experienced similar on another build. Sometimes the bridge is so good, it looks like it actually belongs ;) (doh)
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TreeSlayer

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Re: Autobahn
« Reply #18 on: February 08, 2013, 09:14:35 PM »
sorry, guys! the girls took me to dinner tonight. i mean hey, wouldn't y'all go out with the soft tails instead of talkin to a bunch of hard tails? ;{D
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Re: Autobahn
« Reply #19 on: February 08, 2013, 09:15:44 PM »
do you check for solder bridges with a magnifying glass? I had this same issue and turns out there was a bridge on the wire going to one of the pots
yup, but i'm goin over it for the fourth time. i think now that's my problem...
"At the line it's just you, me and the tree." the TreeSlayer

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TreeSlayer

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Re: Autobahn
« Reply #20 on: February 08, 2013, 09:20:07 PM »
Double check to make sure you didn't miss a jumper under the ic.

Also you can sometimes fry a backwards part or damage during removal.  So when you reverse and replace, doesn't work for a different reason.

I just spent 2 hours last night troubleshooting a sho'nuff v2 pcb.  Actually a very simple circuit but I had to actually ohm it out.  First an open circuit diode, and then a bad trace to the bypass mode at the on board 3pdt.

Mind you I built a cavedweller and slow loris earlier in the week with no issue..!

Good luck!
i've had so much trouble that the only thing i don't socket is resistors and diodes, and caps i know have a lot of space between other parts.
"At the line it's just you, me and the tree." the TreeSlayer

"You have the rest of your life to make excuses and be a fuckin' pussy. Today is your day OFF!"  Amiri King

jimilee

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Re: Autobahn
« Reply #21 on: February 08, 2013, 09:37:04 PM »
sorry, guys! the girls took me to dinner tonight. i mean hey, wouldn't y'all go out with the soft tails instead of talkin to a bunch of hard tails? ;{D
+1
Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

Haberdasher

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Re: Autobahn
« Reply #22 on: February 08, 2013, 09:43:30 PM »
reflow all your solder joints.  with all those sockets in there i could see having a dead one.
this circuit is kind of weird too.  if you're using low output pickups you really have to find the sweet spot on the sensitivity knob to get the groovies.
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jimilee

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Re: Autobahn
« Reply #23 on: February 08, 2013, 09:50:43 PM »
Hoping to get mine boxed finally this weekend
Pedal building is like the opposite of sex.  All the fun stuff happens before you get in the box.

blue_tokai

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Re: Autobahn
« Reply #24 on: February 08, 2013, 09:58:03 PM »
Hoping to get mine boxed finally this weekend

Just pulled the guts out of the box mine was in so I could paint and decal up the box. Something to do during the snow storm :P
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wgc

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Re: Autobahn
« Reply #25 on: February 09, 2013, 07:46:50 AM »
Double check to make sure you didn't miss a jumper under the ic.

Also you can sometimes fry a backwards part or damage during removal.  So when you reverse and replace, doesn't work for a different reason.

i've had so much trouble that the only thing i don't socket is resistors and diodes, and caps i know have a lot of space between other parts.

Just want to be clear:

Try a new part if you had it backwards, the original may be trashed when powered up backwards.

Don't forget to check the jumpers
always the beautiful answer who asks a more beautiful question.
e.e. cummings

TreeSlayer

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Re: Autobahn
« Reply #26 on: February 09, 2013, 11:26:13 AM »
Hoping to get mine boxed finally this weekend
lookin forward to seein it!
"At the line it's just you, me and the tree." the TreeSlayer

"You have the rest of your life to make excuses and be a fuckin' pussy. Today is your day OFF!"  Amiri King

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Re: Autobahn
« Reply #27 on: February 09, 2013, 11:37:24 AM »
Double check to make sure you didn't miss a jumper under the ic.

Also you can sometimes fry a backwards part or damage during removal.  So when you reverse and replace, doesn't work for a different reason.

i've had so much trouble that the only thing i don't socket is resistors and diodes, and caps i know have a lot of space between other parts.

Just want to be clear:

Try a new part if you had it backwards, the original may be trashed when powered up backwards.

Don't forget to check the jumpers
cap tested good. all five jumpers are in.
"At the line it's just you, me and the tree." the TreeSlayer

"You have the rest of your life to make excuses and be a fuckin' pussy. Today is your day OFF!"  Amiri King

TreeSlayer

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Re: Autobahn
« Reply #28 on: February 09, 2013, 11:40:20 AM »
reflow all your solder joints.  with all those sockets in there i could see having a dead one.
this circuit is kind of weird too.  if you're using low output pickups you really have to find the sweet spot on the sensitivity knob to get the groovies.
even though they look good, i think it's worth a shot to reflow. runnin Seymour Duncan "Duckbuster" pup at the bridge....
"At the line it's just you, me and the tree." the TreeSlayer

"You have the rest of your life to make excuses and be a fuckin' pussy. Today is your day OFF!"  Amiri King

TreeSlayer

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Re: Autobahn
« Reply #29 on: February 11, 2013, 08:32:18 PM »
Hoping to get mine boxed finally this weekend
did you get it done last weekend?
"At the line it's just you, me and the tree." the TreeSlayer

"You have the rest of your life to make excuses and be a fuckin' pussy. Today is your day OFF!"  Amiri King