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I did try a 9v battery setup and it did the same thing.

I don't have a test rig.


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All my parts came from Mammoth with just a few coming from Mouser.  I have tried two different pt2399's. 

I will try and get a video uploaded.

A 9v 'one spot' power supply direct into the delay.


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It flashes right when I plug it in.  But it doesn't flash again for a while after being powered. Almost like it takes an hour or so for "stored" power to fade and allow it to flash again. 


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Well, I thought I would resurrect this thread.  I  continued to have issues with the pedal and gave up on it.  About a week ago I bought new parts to rebuild, including a new pcb.  The only thing I reused was jacks, LEDs, foot switch and pots.  I took my time to ensure I rebuilt correctly.   I got everything built....put back together and decide to test it out.
I was unpleasantly surprised that it was making the exact same noise as before.  I have gone through diagnostics again and I am at a loss.  You would think a new pcb with all new components would fix the issue!!

I did notice a strange issue with the tempo LEDs.  When I first plug in power, both LEDs flash as they should.  However, one of the LEDs only flashes about 3-4 times and then it just fades out and doesn't flash anymore.  Almost like the power fades out to that one LED?  Not sure what would cause that?

I am so frustrated with this pedal...I'm ready to trash it all or pay to ship it to someone who can fix the dang thing.

I finished up a green bean build.  Just thought I would share the results.  So far I'm really digging the sound of this pedal. "Let's pawty Bennett!"





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Ok got a new 4.7m resistor and installed it this evening.  Same thing with the noise.  I also noticed a faint high pitched squeal coming from the board when power is hooked up.  I haven noticed it before, so I'm not sure if it was or wasn't doing it before. I checked voltages on the 2n5088...

E- 18.43
B- 0.87
C- 0




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Guts shot.  It's not the prettiest but I'm new at this. Hopefully things will get neater as I learn.





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I'll get gut shots this evening.


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Just completed my Madbean Moodring build.  This pedal sounds Legit!

Karate kid theme....





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Ok I had some time this weekend to try and diagnose this pedal a bit.  One thing I found was for some reason the R2 was installed as a 3.9M and not the correct 4.7M.  Do you think this might be the issue?

Unfortunately I did not have a spare 4.7M laying around, so I won't know if this is the culprit until I can get one.


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Would it be possible to put 3 LED's in for the asymmetrical side and go stock on the symmetrical?


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I'm somewhat new to pedal building so forgive me if this seems remedial, but if I'm looking to do a true stock 808; what would I need to do with the D1-D3? 


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I am about to start a Green Bean tube screamer project soon and had a question.  I plan on doing the stock version of the build, but I wanted to ask what the typical diode everyone has used for D1-D3?

The instructions say "your choice".  Anyone have any experience doing the stock version? If so, what diodes did you use in these locations?

Ok I pulled the Q1 2n5088 and measured the voltages.
With the Q1 pulled I measured the pcb holes where it was supposed to go...
Collector - 18.55
Base - 3.7
Emitter - 0

I then installed a brand new 2n5088 and immediately remeasured and got the following....
Collector - 10.55
Base - 1.63
Emitter - 1.59

Not sure what is going on.....
Any ideas?