Help me debug my LBP-1 build

[Edd]

This is an EHX LPB-1 Circuit
It's meant to be a Clean Boost (and is essentially a small transistor amp) but at the moment mine is making the signal quieter and with overdrive clipping (but not the nice kind!)
So it's almost doing the opposite of what it should do!
I also get the same sound whether power is on or off.

Here is the original layout
http://diy-layout.com/25

I'm using this schematic mainly http://www.beavisaudio.com/techpages/HIW/hiw1.gif
Although I have sourced many more - I ended up knowing the circuit so well (from my attempts at debugging) that I rebuilt it again using my own layout, trying to avoid problems I'd had previously!


I tried to take real life pictures, unfortunately the quality of my camera phone is atrocious! But I will add a guarantee that the above diagram is exactly the same as the built circuit board.
I've checked for solder connections across strips of the perfboard and found none, I've also checked the pin outs of the transistor to be correct.

I used all the specified components, except the transistor, this is a BC549C instead of a 2N5088

[frequencycentral]

I used all the specified components, except the transistor, this is a BC549C instead of a 2N5088

BC549C have opposite pinout to 2N5088. You need to flip the tansistor around.

[Edd]

Already done that!
In fact, sonically it didn't make a difference

[Earthscum]

maybe try a different transistor (not different number, just not the actual tranny you're using). I did a booster about a year ago that was driving me nuts, and NOT driving the signal... turned out I fried the tranny (soldering is my guess). I got sound, but it was just attenuated.

[Edd]

Maplin haven't got any of the transistors left, I'm hoping to get some 2N3094's from Ebay though, I think my a couple of resistors may be blown too!

[Gus]

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

Next it is a circuit you can find in textbooks.

[smallbearelec]

I agree that the layout looks like it should work. Beyond that:
--All component values must be correct.
--All connections must be made.

So Something isn't right. What I would do is get rid of the stomp switch...it confuses matters. Wire straight through from input to output. If the thing does not work, make a clean copy of the schematic and use a multimeter to test continuity of EVERY joint and trace. Mark off as you go with a highlighter. Sooner or later, you will find a mistake.

You may also want to back up and try breadboarding it.

Regards
Steve Daniels

[Edd]

Thanks Steve, I ruled out the switch and I'm 90% sure 2 resistors and the transistor are whats wrong.
Those 3 components are fried me thinks!
Fortunately I've just won 100 2N3094's for about £6 - Bargain. And I'll get the resistors when I get them.

Thanks for all the advice, this forum is a fantastic community, I'll get back to you all when I receive my trannys!
Edd

[Hides-His-Eyes]

frying a resistor takes some SERIOUS doing. I doubt it's that.

[deadastronaut]

@edd..i take it your in the uk.....forget maplins they are pricey and never have what you want!!!!...and suck big time...
i only ever go there as a last resort..

try bitsbox.com...brilliant little online shop for trannies  and all other bits ok...and cheap...
great service too.any order £1.50 postage..and get it next day ok...brilliant....rob.

(no its not my site)...