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Thanks for this! Yeah. Checking with the DMM, I have continuity between pins on both 3PDTs.

Yes.

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.

No. There is no sound, whether active or in bypass. (Good question. Thanks!)

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!

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...

Thank you, Robert! I had pulled a couple of old S4 jacks. They didn't have the plastic washers, so I didn't even think about it. (Big DUH! on my part.)

Has anyone else discovered that the FCR14422 washers don't fit the Acrobat? The holes on the PCB are too far forward. They should be right next to the first row of pins for the S4 jacks. I tried bending the pins on the washer, but they snapped off. Is there another way to ground the PCB to the...

Good info! Thanks, Bricksnbeatles! Does the orientation of the 4p3t rotary switch matter? If not, cool. If so, how can you tell which lug is which?

Thanks!

For the Salesman, can I get away with a 1590BB or do I need a deeper enclosure like a 1590BBS?

Cool! Thanks!

Thanks! That makes sense. I don't know if a discrepancy between jfets would cause such a drastic problem (Q5 minimum VCC of 6.19 and Q6 minimum VCC of 7.09), but maybe that's what is happening.

I should have socketed them! LOL! All the jfets I had available were SMDs mounted to TO92 adapter boards, so I used pin headers and soldered them to the PCB. Maybe I'll see if I can desolder Q5 and Q6 and sub in some 2N5457s. Thanks for the advice!

Thanks, friend! Excuse my ignorance. My minimum drain VCC is 6.19 (Q5) and 7.09 (Q6). (The maximum is 9.06 on both.) My problem, as stated at the top of the thread, is that I can't get them lower than that with 50k trimmers. But, that's just restating the original problem. How do I fix the issue?

I independently sourced the components. I believe the jfets came from Stompboxparts, who are usually reliable, but I totally get your point. I need to start socketing transistors since I already do so with ICs (and diodes sometimes). Thanks for the info, friend!

Thanks! I needed to ask a more thorough question. I used J201 transistors pre-soldered on TO92 adapter boards. I had to mount them underneath the board since there wasn't enough room on top. I double-checked to make sure they were all facing the right direction. Trim pots 1 and 2 are both 50k (I...

Hey, friends! I finally got around to building the Pineapple (Wampler Pinnacle). I found a thread giving the recommended values for biasing Q5 and Q6, but I need help getting the drain voltage below 6.19 and 7.09. I get sound in active and bypass, but the effect doesn't seem quite right. It's...

I'm sure it's not the pots. I replaced one once early on in pedal building but that didn't solve the problem. I'm thinking it's something else that's close to shorting out that, for some reason, shorts out when the pot is secured tightly to the enclosure. Thanks for the advice about searching...

I see your logic, but I'm pretty sure it's not bad pots, since the problem is solved by either loosening the nut, adding insulation, or shifting other components around within the enclosure. The pot still does its job without having to be replaced.