problem with a diy fuzz pedal

dennis3000 · July 16, 2015, 06:01:55 AM

hello i am a bigginer in building diy pedals i have bougth this diy pedal http://www.diyguitarpedals.com.au/shop/index.php?main_page=product_info&cPath=1&products_id=31 an i wiring with this http://www.diyguitarpedals.com.au/shop/boms/7_Min_Fuzz.pdf and this

and i have a problem It make a noise and the singal of the guitar dosen hear . what can i do??

Elijah-Baley · July 16, 2015, 07:34:40 AM

Show us some pictures.
The circuit is very simple, so there's no many things to wrong.

Meanwhile, check the polarity of the diode, electrolytic cap, and check the pinout of the transistor.
It is highly recommended use socket for transistor, almost in any case, in this case you can use it for the diode, and also for the caps, and try different components. But before let's solve the problem.
PS Check the contacts with a multimeter.

dennis3000 · July 16, 2015, 09:05:51 AM

i dont kno how to upload fotos :/

duck_arse · July 16, 2015, 09:15:03 AM

dennis - Elijah-Baley covered nearly everything, except "welcome to the forum".

did you follow the "testing your effect" page? what results there? if you change the title of this thread to include "7 minute fuzz" or similar, chromosphere himself will maybe appear to help you.

to post photos, you need to have them hosted somewhere, like imgur (or dropbox, imageshack, botophucket, tinypic, others), then copy the link they supply to your image, and paste it between the tags provided by the

button.

dennis3000 · July 16, 2015, 09:34:36 AM

duck_arse thank for the aswer https://imageshack.com/i/exGikXCKg this is the way that i wiring

duck_arse · July 16, 2015, 09:40:09 AM

can you post some photos of what you built? then we can see if the switch is the right way, or the jack connections are correct, or you've used the wrong colour wire, or .....

did you test without the switch?

dennis3000 · July 16, 2015, 10:29:43 AM

Elijah-Baley · July 16, 2015, 11:48:16 AM

Quote from: duck_arse on July 16, 2015, 09:15:03 AM
dennis - Elijah-Baley covered nearly everything, except "welcome to the forum".

Thanks duck_arse, I'm unforgivable.

Welcome dennis3000!

On the board seems to me all correct, diode and transistor orientation is ok (is the MPSA13, it isn't?), and also the pot, just you assure the contacts is ok. Take a look to the other soldering on the board, if you didn't do it yet.
Sorry my insistence, but just confirm us all these checks.

I don't like too much the soldering on the footswitch. I'm not so expert as I want the other believe, but I find very useful test the circuit without the footswitch and led, because this will tell you that the circuit works.
So, cut the wires (that is rather longer than my usually building anyway) and following this drawn:
http://www.diystompboxes.com/smfforum/index.php?topic=107081.msg982086#msg982086 (thanks deadastronaut!).

Take a good battery and don't make confusion with input and output jack and their tip, sleeve and ring.
It is a little step back, but could be helpful.

dennis3000 · July 17, 2015, 05:18:09 AM

hi i test it before i wiring the footswitch but i had the same problem :/ only the boards and the jacks and dc
yes it is the MPSA13

GarryGirthOak · July 17, 2015, 05:27:21 AM

... could it be a bad pot perhaps? try bypassing the pot with a wire, see what happens. note: just becareful when you do this, there will be a massive jump in volume.

Does the LED work? and also might be an idea to get a 9v power supply so you can eliminate the possibility of drained battery.

Elijah-Baley · July 17, 2015, 05:34:50 AM

Quote from: GarryGirthOak on July 17, 2015, 05:27:21 AM
[...] note: just becareful when you do this, there will be a massive jump in volume.

Maybe, after this operation, you could check the transistor. Maybe measuring the voltage.
If the problem is on the board there's really no much to check.

dennis3000 · July 17, 2015, 05:35:38 AM

i will try that yes i have the power all

duck_arse · July 17, 2015, 09:29:56 AM

dennis, please don't take offence, but practise your soldering to lugs. as EB and the build docs says, test first without the extras (switch, dc socket). rule #1 - if it doesn't work with the minimum, stop. don't add stuff till the basic works. also, don't put it in the box till all is working.

do you have a multimeter for the next steps?

dennis3000 · July 17, 2015, 01:59:21 PM

i tryied but the signal of guitar dosent heard a lot . I tested on the power all with MOOER Multi-Plug Power Cable 8 Angle on the 4th plug and i have better sound but the coble of the out jack to amp is heated

Cozybuilder · July 17, 2015, 02:07:23 PM

This just begs to be painted gold with a .9999 stamped on it!

dennis3000 · July 17, 2015, 02:36:49 PM

sorry but i dont understand :/

Cozybuilder · July 17, 2015, 02:44:35 PM

I hit the wrong posting reply, this was meant for the one below yours. Sorry

dennis3000 · July 18, 2015, 05:42:27 AM

finally I made .The problem was the current that I had gone to a profetional to connect the dc jack and had put upside down

duck_arse · July 18, 2015, 08:50:50 AM

well, dennis, I think it's all clear to me now, except for this bit:

Quote from: Cozybuilder on July 17, 2015, 02:07:23 PM
This just begs to be painted gold with a .9999 stamped on it!

which I don't unnerstan either. and good work on the fixxe (it is fixxed, yes?)

dennis3000 · July 18, 2015, 11:41:35 AM

yes thanks for your help

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problem with a diy fuzz pedal