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 Faulty DD-3
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ljplum12
Copper Member

USA
29 Posts

Posted - 01/29/2008 :  01:49:44  Show Profile  Visit ljplum12's Homepage  Send ljplum12 an AOL message  Click to see ljplum12's MSN Messenger address  Send ljplum12 a Yahoo! Message  Reply with Quote
Hey guys,
There are enough people around here that seem to have a lot of experience and knowledge when it comes to fixing pedals, I was hoping someone could help me out. I have a DD-3 that will power on, but won't pass a signal, either bypassed, or with the effect on. The signal will, however, pass through the "Direct Out" port.

Is there a (relatively) common problem that occurs with these pedals or Boss pedals in general?

Also, is the "Direct Out" jack buffered at all, or is it directly connected to the input?

Does anyone have a schematic for the DD-3? I browsed the net a bit, but came up empty.

Is there a general buffering circuit that Boss uses for its pedals when the effect is not on?

I'm pretty proficient in electronics (have a Bachelors in EE), so you can give it to me pretty straight, and soldering is no big deal. I hope you guys can help. Thanks!

Lloyd

ChristoMephisto
Platinum Member

Canada
1288 Posts

Posted - 01/29/2008 :  03:18:07  Show Profile  Reply with Quote
Did you look inside to see if there was any broken wires or bad traces...
Heres a link to the schems, is your an older mij?
http://www.schematicheaven.com/effects/boss_dd2_digital_delay.pdf

Im sure there will be others who can help to
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ljplum12
Copper Member

USA
29 Posts

Posted - 01/29/2008 :  03:49:40  Show Profile  Visit ljplum12's Homepage  Send ljplum12 an AOL message  Click to see ljplum12's MSN Messenger address  Send ljplum12 a Yahoo! Message  Reply with Quote
Hey, thanks for the reply. I looked for obvious broken wires and traces and didn't come up with anything. The pedal is actually pretty new, manufactured in September of 06 according to the decoder.
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ljplum12
Copper Member

USA
29 Posts

Posted - 01/29/2008 :  03:52:24  Show Profile  Visit ljplum12's Homepage  Send ljplum12 an AOL message  Click to see ljplum12's MSN Messenger address  Send ljplum12 a Yahoo! Message  Reply with Quote
Also, I don't know if this means anything or not, but it will turn on even if there's not a cord plugged into the input.
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