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Malotru
 Post subject: Analog chorus, no effect
PostPosted: Fri Feb 08, 2019 2:34 pm 
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Hi! This is my first build and my first post. I get sound when the pedal is on, and the led is working, but there is no chorus effect. When i turn the trimpot i get strange noise.
Any ideas?
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duhvoodooman
PostPosted: Fri Feb 08, 2019 3:13 pm 
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The top three IC's (MN3102, MN3007, TL022) are installed in the wrong spots. The printing on top of the IC needs to match the silkscreen labeling on the PCB. Pull those three out of the sockets and reinstall in the correct positions.

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Malotru
PostPosted: Fri Feb 08, 2019 3:58 pm 
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duhvoodooman wrote:
The top three IC's (MN3102, MN3007, TL022) are installed in the wrong spots. The printing on top of the IC needs to match the silkscreen labeling on the PCB. Pull those three out of the sockets and reinstall in the correct positions.
Thank you, i obviously missed that rushing a bit through the last steps. Stupid of me. I just put them in the right places. The only difference now is That the led is blinkning as a turn the rare knob, but still no effect in The signal!

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Stephen
PostPosted: Fri Feb 08, 2019 4:30 pm 
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Have you tried dialing in the trim pot?

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Malotru
PostPosted: Fri Feb 08, 2019 4:48 pm 
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Stephen wrote:
Have you tried dialing in the trim pot?
Yes! Nothing changes when dialing the trim pot. I get no signal in The beginning and the end, and just clean signal in the middle/greater part of the aweep. (i hope you Understand my english).

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Stephen
PostPosted: Fri Feb 08, 2019 7:25 pm 
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Did you try dialing it in slowly? The reason I ask is because the sweet spot is small and you can turn the trimmer past the SS and not even know it.

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Malotru
PostPosted: Sat Feb 09, 2019 8:53 am 
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Stephen wrote:
Did you try dialing it in slowly? The reason I ask is because the sweet spot is small and you can turn the trimmer past the SS and not even know it.
Yes i am very sensitive with it but still no effect at all...

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byoc
PostPosted: Tue Feb 12, 2019 11:04 am 
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Do you have a signal tester?

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Malotru
PostPosted: Tue Feb 12, 2019 3:10 pm 
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byoc wrote:
Do you have a signal tester?
I have a multimeter but not really sure where start and how to measure. I would really appreciate some input/tips or links!

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byoc
PostPosted: Tue Feb 12, 2019 4:47 pm 
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Pull the MN3007 out. Use a piece of wire to make a jumper to connect pins 3 and 8 of the empty socket. Can you hear any difference when you have the jumper in as opposed to when you have the jumper out?

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byoc
PostPosted: Tue Feb 12, 2019 4:50 pm 
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Also, it looks like lug 8 of the footswitch might be touching the jumper wire between lugs 4 and 9.

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