Colorsound SupaSustain noise

[Kenny]

I just wired up a new switch in my SupaSustain pedal
the problem with this pedal is NOISE. I wired it up just (stock)
with a carling DPDT switch and it sound's great.
To wire true bypass do I need to run a
wire from the board(effect input?)

How can I stop the hiss? grounding/sheilding?
any help would be really appreciated!

Kenny

[petemoore]

prevalent Hiss?
 Could be an active component or less likely cap...or something else...
 Like how specific I am?    I'ts the nature of debugging that everything seems to be messed up with a circuit, that is only right up until the point at which you figure out why it WAS messed up.
 Anyway hiss usually isn't caused be a miswire [maybe a misoriented transistor] in my Exp.
 I have had hissy active components, and low % of problems with electrolytics.
 >Viewpoints on my observation that electrolytic cap failure isn't usually associated with actual hiss??? Anyone?
 Anyway if you've socketted your active components, it might be a good place to start by swapping.
 [If you didn't socket or take the proper overheating precautions, it's easy to miss heat sinking one leg of a Q], this would seem as likely a place to look for hiss as any].

[lightningfingers]

this may sound obvious but check your jacks, its an easy mistake to make, and if you wire the gnd th the input and the the tip to gnd that would really make it hiss.

just a thought..............

[Kenny]

My pedal is actually A colorsound pedel NOT a diy.
sorry for any confusion if there is any.
But further listening and playing thru this... 18volt box...
with the bottom off the effects hardly works, but put that bottom cover on
or put you Hand over the board...WOW...the effect's gain goes up ^ 10 fold...I guess it should... with gain is there compromise?
there is a background hiss on even when the guitar is not plugged in. should I start trouble shooting, rewire all the jacks or build a new one?

thanks

[saxtim]

Kenny,

My pedal is actually A colorsound pedel NOT a diy.

I'm curious if you can tell me what sort of sound you get out of this pedal, specifically does it distort and function as an overdrive more than a clean compressor?  Reason I ask is I built one (DIY) and the thing distorts like crazy by the time you put the sustain control all the way up.  It doesn't sound bad, but no one hear has managed to answer whether or not the originals did this.

tim

[MR COFFEE]

Kenny,

If you want help troubleshooting, you will need to give more specific information helpful in diagnosing your problem or we're all just listing our favorite snafus.

Since you said the gain goes up when you put your hand over the board, I'm guessing you are getting high gain with the bottom off - probably because the photocell isn't enclosed with the LED and the ambient light is hitting it.

A wild guess is that you have mis-wired the stomp switch, and the input to the board isn't being grounded when the effect is out.

To get more help here, you will have to tell us

1) Did it work right (relatively quiet) before you added the true-bypass switch?

if so, you will have to

2) Trace out how you wired the DPDT switch and post a schematic or picture.

The other wild-ass possiblility is that your lead dressing is causing high frequency (above the audible range) oscillations.

[Kenny]

Tim,

My Supa-sustain seems more like both. Its volume control doesn’t match the
bypass signal in volume until the (sensitivity knob) is about 5/8 up on the dial.
Then the volume ramps up with nice warm comp/crunch?…
Its no big distorter…yes overdrive w/ compression plus hiss
What should I compare it to?
I haven’t played thru any ts-9’s or 808’s…only my Marshall bluesbreaker
Hot-tubes… homebuilt ampeg scrambler,  fuzz face
My goal is to build a multi-pedal approx. 15” long with most of the sounds you need for rockabilly/blues/rock that you can gig with.

I hope this helps...

Cheers

[Kenny]

Mr. Coffee

Nice post... if I would only look into the circuit and use my brain instead of beer.
I would be closer to the solution.  The LDR’s yes there are two...
This answers the open bonnet question. duh
The bloke that built this was pretty clever,

1) the switch was giving trouble, repair was required


   I'll post my repair soon!


    Kenny