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Dirk
Platinum Member
Netherlands
1309 Posts |
 Posted - 01/25/2010 : 18:42:30
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For some reason my CS-3 distorts like crazy when I power it from a battery, it sounds like some old overdrive 
It's fine when used with a PSA adaptor, and this is how I mostly use it.
It's an ACA pedal but I modified it for PSA use.
It also happens both when I use the pedal in front of the amp, and when I put it in the effects loop, which is were I mostly use it depending on the amp I'm using.
It's a fresh battery, my TU-2 runs fine on it and the voltage doesn't drop from the 9 volts clip into the pedal. It passes the DC input just fine.
Any ideas? My best bet would be that the voltage drops somewhere, having the pedal run out of headroom, thus inducing distortion.
But why only from a battery, and not with an AC adaptor?
Any bright ideas would be most welcome. |
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zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 01/25/2010 : 22:18:47
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| LOOSE WIRE WOULD BE MY GUESS |
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nosi0
Gold Member
Netherlands
511 Posts |
Posted - 01/25/2010 : 22:34:19
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It's a CS-3 would be mine  |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 01/25/2010 : 22:39:22
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This is the second one in the last week (http://www.bossarea.com/forum/topic.asp?TOPIC_ID=8884).
Often this happens because the voltage onto the board is too low causing the opamps to clip too early. We've ruled this out in both cases though.
Dirk, does your meter measure current? Can you measure how many millamps are being drawn from the battery? Easiest way is to set your meter to millamps, then clip one of the battery terminals to the battery snap and bridge the other terminal to the other side of the snap with the multimeter. |
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Dirk
Platinum Member
Netherlands
1309 Posts |
Posted - 01/26/2010 : 17:34:57
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Ok Laurie, I tried this and the meter fluctuates a little between 11.6 and 12mA.
I could be losing my mind, but when I played with it yesterday at home it didn't distort at all when using a battery.
But everytime I tried using it like that in a rehearsal space or on stage, it did distort.
Using it with an adaptor still sounds better to my ears though, a little cleaner and louder. |
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cleggton
Copper Member
United Kingdom
5 Posts |
Posted - 01/26/2010 : 20:39:20
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I can confirm it looks like a low power issue, my pedal was the other, when i plugged it in to have another try (at night) i noticed the LED was actually lit, albeit very dimly. Gonna grab a schematic and get my multimeter on it to see what i can find
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cleggton
Copper Member
United Kingdom
5 Posts |
Posted - 01/26/2010 : 22:07:45
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Laurie,
Found the problem. Even though mine is a MIT pedal it required the ACA adapter and has R32, D10 configuration on the board. Do you have details on haw to mod to use PSA, I have read somethings about jumpering the 470ohm resistor (r32) and D10, but my R32 is a 220 by looks of it. Any decent instructions would be appreciated. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 01/26/2010 : 22:17:41
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quote:
Originally posted by cleggton
Laurie,
Found the problem. Even though mine is a MIT pedal it required the ACA adapter and has R32, D10 configuration on the board. Do you have details on haw to mod to use PSA, I have read somethings about jumpering the 470ohm resistor (r32) and D10, but my R32 is a 220 by looks of it. Any decent instructions would be appreciated.
Replace R32 and D10 with wire links. Then never use an ACA with it  |
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cleggton
Copper Member
United Kingdom
5 Posts |
Posted - 01/26/2010 : 23:21:54
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| cheers |
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Dirk
Platinum Member
Netherlands
1309 Posts |
Posted - 01/27/2010 : 16:49:34
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Tonight is band rehearsal, I'm gonna try that pedal one more time on a battery there.
To be continued.... |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 01/27/2010 : 16:53:08
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quote:
Originally posted by Dirk
Tonight is band rehearsal, I'm gonna try that pedal one more time on a battery there.
To be continued....
Thanks! More info will help! |
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FRANZONI
Double Platinum Member
Ireland
3543 Posts |
Posted - 01/27/2010 : 17:00:14
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quote:
Originally posted by Dirk
Tonight is band rehearsal, I'm gonna try that pedal one more time on a battery there.
To be continued....
Maybe the rehearsal room is haunted and a ghostie is sucking the life out of the battery......... |
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Dirk
Platinum Member
Netherlands
1309 Posts |
Posted - 01/28/2010 : 17:38:14
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quote:
Originally posted by FRANZONI
Maybe the rehearsal room is haunted and a ghostie is sucking the life out of the battery.
In that case I better give Jennifer Love Hewitt a call too.
Either I am losing my mind or the problem just corrected itself.
I played the entire night with the pedal on a battery yesterday during rehearsal, and it just works like it's supposed to. No unwanted distortion whatsoever.
So I'm glad about it, but that still doesn't explain why it didn't work properly in the past.
Usually it's not such a problem, cause when I use multiple pedals I feed 'em off a PSA and a daisy chain, but when I just use the CS-3 it's easier just using a battery. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/29/2010 : 05:19:21
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quote:
Originally posted by Dirk
quote:
Originally posted by FRANZONI
Maybe the rehearsal room is haunted and a ghostie is sucking the life out of the battery.
In that case I better give Jennifer Love Hewitt a call too.
Either I am losing my mind or the problem just corrected itself.
I played the entire night with the pedal on a battery yesterday during rehearsal, and it just works like it's supposed to. No unwanted distortion whatsoever.
So I'm glad about it, but that still doesn't explain why it didn't work properly in the past.
Usually it's not such a problem, cause when I use multiple pedals I feed 'em off a PSA and a daisy chain, but when I just use the CS-3 it's easier just using a battery.
#$@*& Gremlins
I called the local witch doctor, & vanquished them all from my home.
The CE-2's & other pedals have never sounded as good.
Don't belive me? 
Just as Laurie, after-all he did live here with us for a few days.
Damm fine guy & good friend - even if I say so my self.
Honest as the day is long, & very very tall.
Regards Dr. Bob |
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CS-3 distorts on battery power
