SOLVED Acrobat won't pass sound

M

Mr. Strypes

Member
Just finished putting the Acrobat together. It lights up just fine. Testing with a multimeter, I'm getting voltage to all of the ICs. I assumed (and partially still think) there's a grounding issue, but I'm not sure. Of course, it gets power, so maybe not.
I've tried:
- Scraping all the paint away from the enclosure's 1/4" holes so there's bare aluminum touching the CLIFF washers.
- Attaching a ground wire between the CLIFF washers and then attaching that to an external ground.

Any ideas? Thanks in advance! (Love this community!)
 

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Oh, yeesh! Okay. I got rid of the solder bridge. It didn't solve the problem, but that certainly would have been an issue down the road. Thanks, Nostradoomus!
 

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Don't worry about enclosure grounding right now. Poor enclosure grounding could cause noise but the pedal would still function.

No sound in bypass points to jacks, 3PDT, 3PDT breakout board, or the connections between those points.
 
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Robert said:
Don't worry about enclosure grounding right now. Poor enclosure grounding could cause noise but the pedal would still function.

No sound in bypass points to jacks, 3PDT, 3PDT breakout board, or the connections between those points.
Click to expand...
Thanks, Robert. How can I test to figure out where the problem might be? I've troubleshooted and replaced off-board components before, but they're all on-board on the Acrobat.
 
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Grabb your DMM and check continuity or resistance on the switches in a vertical fashion. Should work like this in each position.
123
123
XXX
And
XXX
123
123

Kinda hard to screw up the jacks I less it's a switching vs non-switching thing.
 
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jwin615 said:
Grabb your DMM and check continuity or resistance on the switches in a vertical fashion. Should work like this in each position.
123
123
XXX
And
XXX
123
123

Kinda hard to screw up the jacks I less it's a switching vs non-switching thing.
Click to expand...
Thanks for this! Yeah. Checking with the DMM, I have continuity between pins on both 3PDTs.
 
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With the pedal in BYPASS (and no power applied), check for continuity between the tip connections of the input/output jacks.

If you have continuity, then check for continuity between the tip and sleeve connection of either the input or output jack.
 
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Robert said:
With the pedal in BYPASS (and no power applied), check for continuity between the tip connections of the input/output jacks.

If you have continuity, then check for continuity between the tip and sleeve connection of either the input or output jack.
Click to expand...
I don't have continuity between the tip connections when in bypass.
Interestingly, I do have connections between the sleeves of the input and output jacks, and the rings as well. (Is that normal? LOL!)
 
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Mr. Strypes said:
I don't have continuity between the tip connections when in bypass.
Interestingly, I do have connections between the sleeves of the input and output jacks, and the rings as well. (Is that normal? LOL!)
Click to expand...
Robert said:
With the pedal in BYPASS (and no power applied), check for continuity between the tip connections of the input/output jacks.

If you have continuity, then check for continuity between the tip and sleeve connection of either the input or output jack.
Click to expand...
What might be the issue(s) preventing connectivity between the input and output jacks?
 
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Check for continuity between the tip of the input jack and the far left pad of the bypass breakout board (on the left).

Next check for continuity between the tip of the output jack and the far right pad of the bypass breakout board.
 
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Robert said:
Check for continuity between the tip of the input jack and the far left pad of the bypass breakout board (on the left).

Next check for continuity between the tip of the output jack and the far right pad of the bypass breakout board.
Click to expand...
No. There is no continuity between the tips and their respective pads on the breakout boards. Interestingly, the sleeves and rings connect to the pads (far left for the input jack and far right for the output jack).
 
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I hate to keep harping on this, but does anyone have any other suggestions as to why I don't have connectivity between the jack tips and switches? Early on, I tossed out a few inexpensive builds that were too screwed up to mess with, but this one took a lot of money, time, preparation, and work. I'd hate to throw it out without giving it a shot.
 
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