#2
What switch do you have? Can you post a few pictures of how you've wired up the switch, the trace side of the board and how you've laid out all your components? We need clear, detailed photo's so we can help spot any mistakes you have have made.
"Everybody, one day will die and be forgotten. Act and behave in a way that will make life interesting and fun. Find a passion, form relationships, don't be afraid to get out there and fuck what everyone else thinks."
#3
I have no PCB actually, I mounted it on a prototype board, if thats wat it is called. Its quite messy too, so i dont know how to post a picture of it that wud be useful to you. LOL.


Im uploading whatever pictures i have taken, but it will take a while..
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#4


Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
Last edited by zizou510 at Sep 13, 2007,
#5
well for starters you have 5 resistors, they have 4
also, make sure the unclipped leads arent touching each other, causing a short
#6
I have 5 because i added 820Ohms and 10ohms to make 830ohms
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#7
ok. just carefuly check the transistor is in correctly. connect the battery aswell, and make sure nothing is touching something it shouldnt. trace the path that the signal would follow, and make sure its the same as the smallbox's
#8
Is there a way to check if the transistor is burnt or still alright?

I'll do the tracing thing too.
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#9
usually it will be just burnt.(id assume) do you have a multimeter?
#10
I have a multimeter, but how to test it?
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#11
put the blak end on the negative ground and poke around with the red end. post the voltages you get. im off to make my 1000th post on UG
#12
Ground to Collector, 9.6V
Ground to Base and Ground to Emitter its 8.8V.

I put the black one at the Negative terminal of the battery. Is that correct?
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#14
hm i dont know without having a dc jack how to do a mulitmeter reading. hold on, ill figure it out. did you post on diystompboxes.com? they can figure it out in like 10 seconds
#15
Ok i'll check out DIYstompboxes.. Thx s.r.v.
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#16
hey, my application on DIYStompboxes is still not approved..

But i realised something today. When i place the transistor the other way, (collecter and emitter switch places), there is sound coming from the circuit, but softer than usual. This means the switch and jacks are workin fine, and the problem lies in the wiring of the components itself, am i right?
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#17
I notice there is a significant amount of hum too.
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#18
^ That'll be 'cos you don't have it in a metal or metalized enclosure.
The Laney Thread are big and clever. No exceptions.
#19
Somebody with any knowledge on this?
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#20
Do you know you got the transistor orientation around the right way to start with? Look up a data sheet for it and find the pinout. Make sure this matches the schematic.
"Everybody, one day will die and be forgotten. Act and behave in a way that will make life interesting and fun. Find a passion, form relationships, don't be afraid to get out there and fuck what everyone else thinks."
#23
hm. then it should work... did u clip the leads???
Call me "Shot".

ShotRod Guitar Works

Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007


Source to everything I say about Guitars, Pedals, and Amplifiers: I make them.


UG's Best DIY PedalBoard
#24
Quote by zizou510
Ground to Collector, 9.6V
Ground to Base and Ground to Emitter its 8.8V.

I put the black one at the Negative terminal of the battery. Is that correct?
That's correct, but you need to have something plugged into the input jack, or connect the proper terminals of the input jack together while you're measuring, or you won't have a connection from the battery to the ground of the circuit.

The voltages you're measuring suggest there is little current in the collector circuit, and perhaps the transistor is shorted from base to emitter.

One of the first things to expect is to have ~0.7 volts from base to emitter.

None of this makes much sense, when you consider how much current you'd need through that 360 ohm emitter resistor to have 8.8v across it. (24.4 mA)

So my guess is you don't have a connection from the battery ( - ) to ground. Fix that first.
Meadows
Quote by Jackal58
I release my inner liberal every morning when I take a shit.
Quote by SK8RDUDE411
I wont be like those jerks who dedicate their beliefs to logic and reaosn.
Last edited by SomeoneYouKnew at Sep 15, 2007,
#25
I followed every wire correctly. The negative terminal frm the battery is connected to the ring of the input jack. Is that sufficient? Whatever is in the picture , i did.
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
Last edited by zizou510 at Sep 16, 2007,
#26
Ok, problem solved. It was a grounding issue. I took out the ground wires and re-did them. It worked after that.

Thx to whoever has helped in this thread!
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live
#27
^u need to take the pic off. its copyrighted.
Call me "Shot".

ShotRod Guitar Works

Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007


Source to everything I say about Guitars, Pedals, and Amplifiers: I make them.


UG's Best DIY PedalBoard
#28
Ok took it off. Ty anyway
Gear
MIJ Fender '57 Stratocaster
Vox AD15VT
PodXT Live