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PostPosted: Fri Jun 21, 2019 1:11 pm 
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Joined: Sat Apr 10, 2010 4:29 am
Posts: 194
Location: Belgium
Hi all
No sound and NO led from my octave fuzz when engaged. Bypass works fine.
I didn't make the mistake of switching the 2 + wires, but I still don't understand it. No LED, no sound, neither with power supply nor with battery.

I did this little test, maybe it will point out my mistake?

=> I attached the + of a 9V battery to the + of the 9V AC adapter.
I attached the - of the battery to Position 2 of the 3PDT footswitch.
and then the LED WORKS FINE when I engage the footswitch.
However, when I attach the - of the battery to the - of the 9V adapter instead the LED doesn't work when engaged.

I have the feeling I'm making a silly mistake, but I can't seem to grasp it.

I'll post pics asap.

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Last edited by Tom on Tue Oct 01, 2019 1:23 pm, edited 1 time in total.

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PostPosted: Mon Jun 24, 2019 11:19 am 
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Location: Richland, WA
Clear pics of your wiring would be a big help

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Please do not PM me. email is prefered. keith@buildyourownclone.com


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PostPosted: Mon Jun 24, 2019 12:08 pm 
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Tom wrote:
....I'll post pics asap.

As Keith stated, those would be a HUGE help.

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PostPosted: Mon Jun 24, 2019 1:58 pm 
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Location: Belgium
I know, I know :-)
It's on my HUGE to-do list.
Last couple of days where "mayhem" (is that correct?), last week of corrections and grading students before holidays.
So, pictures are coming :-)
Thanks for wanting to help me out so much!
:D

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PostPosted: Mon Jun 24, 2019 2:31 pm 
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No problem. After all, it's your pedal. My daughter is a middle school math teacher, so I understand exactly where you're coming from!

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PostPosted: Tue Jul 16, 2019 2:09 pm 
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Finally put the octafuzz on my bench again to take pictures.
I dismantled and decide to reflow first.
I tested and now it WORKS with a power supply.
I didn't work however with a battery (i checked voltage of the battery and it read 9.4V). However when I connect the power supply the the battery clip it does work.
Go figure.

So basically, the problem is solved (enough).
I am however intrigued. I feel I'm missing something.
If someone could shed a light on this and help out someone who should started studying basic electronics instead of troubleshooting with trial and error.

- Can a 9V battery NOT provide enough voltage? It reads 9.4V AND it works in a boss pedal I had lying around. But it doesn't work when attached to the battery clip NOR to the DC power supply jack.
- Power supply works both on battery clip and on DC jack.

The something else I'd like to learn about:
i put a jack on the DC power plug, and connected the + with the + on the pedal (with the RED cable in the photo). I wanted to connect the - as well, but didn't need to. I already has sound.
I thought that was strange.

Any thoughts?


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PostPosted: Tue Jul 16, 2019 3:55 pm 
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You have to have a guitar cable plugged in to complete the circuit. Sounds like a simple ground issue.


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PostPosted: Tue Jul 16, 2019 5:09 pm 
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jimilee wrote:
You have to have a guitar cable plugged in to complete the circuit. Sounds like a simple ground issue.


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Jimilee, I have a cable plugged in. The pedal works. But the battery doesn't. And I don't understand why. :)

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PostPosted: Tue Jul 16, 2019 5:39 pm 
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Tom wrote:
jimilee wrote:
You have to have a guitar cable plugged in to complete the circuit. Sounds like a simple ground issue.


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Jimilee, I have a cable plugged in. The pedal works. But the battery doesn't. And I don't understand why. :)

So you have any readings on any of your ICs? That is weird.


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PostPosted: Tue Jul 16, 2019 8:33 pm 
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The DC adapter jack is constructed so that when a DC adapter plug is inserted in it, it mechanically disconnects the battery adapter connection. This is so that if you run from a DC adapter while a battery is installed in the pedal, the battery's power will not drain down. But if you pull the DC adapter plug out of the DC jack, the battery adapter should power the pedal, assuming that you have a good battery installed.

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