Boogey Madness

[modsquad]

So I built a Dr. Boogey from Gaussmarkov's layout.   Plugged it in bypass worked nothing when engaged.   So I checked the layout.   Forgot one of the jumpers.   Fixed that, plugged it in and now no sound from even the bypass which I thought was kind of weird since essentially the audio path bypasses the board altogether. 

Another oddity for me was that I am using a battery with 8.5v and when I measure the voltage at the board its less than +1v.   I am going to go back this week and spend some quality time, but if I can't get the full voltage at the board then its going to make debugging impossible.   Open for any ideas from people who have built it from this layout or others.

[MohiZ]

A few things come to mind:
1) First off, use a fresh battery - starved power may cause inexplicable problems
2) Is the diode oriented the right way?
3) There's a short somewhere - the low voltage is evidence that too much current is consumed
4) Read the DEBUGGING sticky thread 
Best of luck

[modsquad]

Okay first off I have been doing this for about 5 years so trust me I have the debugging text down smart...ss.  My only reason to post this is in case someone had the same problem and could spot it right away.   I plan on debugging but trust me the layout of this thing is really cramped so debugging is going to be a bitch.

1) First off, use a fresh battery - starved power may cause inexplicable problems
And pigs might fly.   The battery is 8.5v I have pedals that are probably running off lower voltages due to battery age right now.

2) Is the diode oriented the right way?
That point may be valid, it wouldn't bet the first time a component got reversed.

3) There's a short somewhere - the low voltage is evidence that too much current is consumed
I was hoping to avoid trying to track this down as I came to the same conclusion.   Oh well.

4) Read the DEBUGGING sticky thread 
See my smart ass comment above.


A little cranky thinking about debugging this damn nuclear bomb built on a postage stamp.

[anchovie]

if I can't get the full voltage at the board then its going to make debugging impossible. 

Not really. You can still use a multimeter to try and find the point where the resistance between 9v and ground is way smaller than it should be.

[jacobyjd]

dude, all those points are valid. Just because you think they don't have an effect doesn't mean you shouldn't try to test it at optimal conditions.

Additionally, debugging will give you a different look at it, thus raising the possibility of finding the problem.

If the layout is cramped, it'll be easier to spot solder bridges with a magnifying glass.

How about pinouts? have you checked all the appropriate data sheets? Twice?