| No sound... Any ideas? [message #1893] |
Wed, 21 May 2008 18:54  |
 Josh
Messages: 1
Registered: May 2008
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Junior Member |
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I finished the Nocto kit and there is no sound when the pedal is engaged.
What I have done:
Checked that all the parts in the right place
Checked all solder joints and double checked for any touching
Checked DC voltage to the 4558 IC and it's getting 5 volts (correct I think)
Checked AC voltage from the 4558 on pin 7 when strummed and it jumps to 1.5
Messed with trim pots
Any help would be great.
Cheers,
Josh
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| Re: No sound... Any ideas? [message #1896] |
Thu, 22 May 2008 16:29  |
dann
Messages: 829
Registered: December 2002
Location: Austin TX |
Senior Member |
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Hi Josh,
We already talked on the phone but I want to document this as it might help others along....
With the voltmeter on "AC Volts", you should around 1.0-2.0V on pin 1 and pin 7 of the 4558 IC when a guitar is strummed and the Nocto is in "green/sane" mode (black lead on ground, red lead on the IC pins)
Following the signal path, you should also get about the same AC voltage at pin 7 of the 4049 IC, and a little higher AC voltage on pins 6, 5, 4, 3, and 2.
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