AMZ FX ANALOG ALCHEMY GEOFX MEF ROG MEF DIY WIKI

Help with pedal build.

Started by hhf, August 25, 2011, 12:27:42 PM

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hhf

August 25, 2011, 12:27:42 PM
Hello, I had bought this fuzz circuit board off of ebay awhile back and finally got around to wiring all the pots,dc jack,battery clip, etc. and it doesn't work. Here is the wiring diagram the guy sent me.



Does the black wire from the battery connect to the jack? The red wire from the battery does this connect to the jack, at the same place that the other red wire from the jack to LED?

Thanks

oskar

#1
August 25, 2011, 12:40:27 PM
Hi, check out this!
http://www.diystompboxes.com/smfforum/index.php?topic=29816.0
Please link to the project!

Did you try it before you wired it into the box?

Here is another take on wiring a pedal:
http://gaussmarkov.net/wordpress/thoughts/wiring-up-a-1590b/

:)

Govmnt_Lacky

#2
August 25, 2011, 12:46:21 PM
I think the quickest and simplest way to get you fixed up is for you to tell us what is the part number on the transistors.

That will help tell us if it is a PNP or NPN Fuzz.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

hhf

#3
August 25, 2011, 01:50:24 PM
I can't really link to what project it is due to I bought the board and it was already populated with the components. If I remember correctly it was a Fuzzbrite Fuzz.

The transisitors are 2222a emitter base collector from left to right on the flat side.

I would have been better off if he sent me a schematic vs the pictoral, kind of hard to tell where the connections are or aren;t in a couple spots.
I did not mount it in the box yet. The led burnt out withn a mind so I did remove it and join the two wires together.
It wasn't passing signal until I touched one of the jacks (grounding issue?) Should the mono jack be grounded, or is the case the ground?

Thanks for the help

Govmnt_Lacky

#4
August 25, 2011, 01:58:55 PM
Looks like you have an NPN circuit. And, the circuit LOOKS LIKE IT COULD BE a Fuzz but I am not 100% about that.

Either way, you should follow the gaussmarkov link above for wiring the power.

Good Luck  ;D
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

deadastronaut

#5
August 25, 2011, 02:01:07 PM
just a note , you needed a 4.7k resistor on the positive leg of the led, then wire connected......thats why it burnt out... ;)

no schematic?...weird and negligent too... ::)
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

oskar

#6
August 25, 2011, 02:02:54 PM
QuoteIt wasn't passing signal until I touched one of the jacks (grounding issue?
Bad solderjoint. Rework the joints on the buggy jack.

hhf

#7
August 25, 2011, 02:25:23 PM
I figured I might need a resistor on the led as it kinda looked like on the diagram, just wasn't sure of the value,so thanks for that.

I'm sure the solder joints are good, Maybe I wired the input one wrong, which one is considered the sleeve? the higher of the two internal contacts on the jack?
Also on the DC jack I have 3 terminals. In the diagram he has the + from the battery going to the tip, should the - from the battery be connected to the sleeve of the jack? Also, should the other red wire from the dc jack be connected to the same terminal as  the +from the battery, or to the 3rd terminal on the dc jack?

I will check out the link you provided, it looks very through.

Thanks again for the help

oskar

#8
August 25, 2011, 04:13:10 PM
QuoteI'm sure the solder joints are good
I've heard that before and maybe you're right.
1. Insert a guitar cable in the jack.
2. Meassure connectivity from the tip of the cable to the other end and see if the signal reaches the first component legs.
3. Repeat with the ground path (Cable shield to jack to pcb ground).

Govmnt_Lacky

#9
August 25, 2011, 04:16:40 PM
Quote from: hhf on August 25, 2011, 02:25:23 PM
Also on the DC jack I have 3 terminals. In the diagram he has the + from the battery going to the tip, should the - from the battery be connected to the sleeve of the jack? Also, should the other red wire from the dc jack be connected to the same terminal as  the +from the battery, or to the 3rd terminal on the dc jack?

This is all explained in the purdy picture in the gausmarkov layout. Provided in the link above  ;D

Good Luck  ;)
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

hhf

#10
August 25, 2011, 04:31:52 PM Last Edit: August 25, 2011, 04:38:56 PM by hhf
Well, ok, i removed the the dc jack altogether to see if I could get it working fom just the battery. Part of my problem was that the input/output jacks were not grounded. I placed the jacks to come in contact with the metal enclosure and it passes the signal when the bypassed. When I engage the switch the signal drops and the knobs don't reeally have any affect?? My switch diagram seems to be wired differently than the one from the link, could that do it?

hhf

#11
August 25, 2011, 04:42:42 PM Last Edit: August 25, 2011, 04:45:05 PM by hhf
Comparing their switch to the one in my original post...seems to be wired differently to me?



Govmnt_Lacky

#12
August 25, 2011, 04:44:40 PM
Some confusing issues:

1) Your Output jack is labeled as having a Tip and a Ring. That is wrong. It should be a Tip and a SLEEVE. Connect a wire from the Input jack SLEEVE to the Output jack SLEEVE. This will ensure it is grounded. (Some people rely on the enclosure to provide the connection... I am NOT one of those people)

2) What is up with the empty pad at the bottom of the board?? Between the Purple wire and one of the Light Blue wires. Is that an additional Ground point?

3) Does anyone else find it odd that the Attack pot wiper is connected to the Level pot Lug 3? Seems weird to me but, without a schematic I can only make an observation.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

hhf

#13
August 25, 2011, 04:50:39 PM Last Edit: August 25, 2011, 04:53:24 PM by hhf
Question 1) I will ground the way you suggested,thanks

             2) When I tip the board over, that empty slot goes over to the +9v tab

             3) not sure?

Govmnt_Lacky

#14
August 25, 2011, 04:55:03 PM Last Edit: August 25, 2011, 04:57:36 PM by Govmnt_Lacky
Quote from: hhf on August 25, 2011, 04:50:39 PM
Question 1) I will ground the way you suggested,thanks

                 This might help your situation but, it definitely cannot hurt  ;D

             2) When I lip the bard over, that empty slot goes over to the +9v tab

                 This is probably just another point where you can send power to your LED without having to shove 2 wires into one hole on the board.

           

Also, refer to this diagram FOR POWER WIRING ONLY! It will help identify which wires go to which points on your DC jack:

http://www.generalguitargadgets.com/pdf/ggg_ff5_lo_npn.pdf?phpMyAdmin=78482479fd7e7fc3768044a841b3e85a

Good Luck  ;D
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

hhf

#15
August 25, 2011, 04:57:40 PM
Thanks, what do you think about the differences in the switch wiring?

Govmnt_Lacky

#16
August 25, 2011, 05:01:22 PM
Quote from: hhf on August 25, 2011, 04:57:40 PM
Thanks, what do you think about the differences in the switch wiring?

Both wiring diagrams WILL work if wired properly. You will see many different ways to wire the stomp switches. It is only a matter of finding one that you like.
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

hhf

#17
August 25, 2011, 05:02:06 PM
Ok, I grounded as you suggested and it passes signal fine now.....Thanks.

When I activate the switch the sound/signal drops, even with out a battery, I'm thinking the switch wiring is off now??

Govmnt_Lacky

#18
August 25, 2011, 05:04:05 PM Last Edit: August 25, 2011, 05:10:42 PM by Govmnt_Lacky
Quote from: hhf on August 25, 2011, 05:02:06 PM
Ok, I grounded as you suggested and it passes signal fine now.....Thanks.

When I activate the switch the sound/signal drops, even with out a battery, I'm thinking the switch wiring is off now??

OK. At this point, I will need to refer you to the following link:

http://www.diystompboxes.com/smfforum/index.php?topic=29816.0

Get the proper test equipment, follow the steps, and you will get it fixed soon.

Good Luck  ;D

P.S. The signal will drop/go away if there is no power on the circuit. So, the signal WILL drop if the battery is disconnected and you activate the circuit  8)
A Veteran is someone who, at one point in his or her life, wrote a blank check made payable to The United States of America
for an amount of 'up to and including my life.'

hhf

#19
August 25, 2011, 05:12:30 PM
Thanks for the help, I will check that out.
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