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Board index » Build Your Own Clone » Effects Pedal Technical Support » Op amp based Distortions, fuzzes and overdrives

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byoc
PostPosted: Tue Dec 18, 2018 6:20 pm 
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peterd237 wrote:
byoc wrote:
It sounds like the noise is coming from IC2a, which is where the clean and distortion signals are mixed together and then boosted before going into IC2b, which is the EQ. Are you sure you don't have the 820p and 390p caps mixed up?


No, was kinda hoping that might be it, but they are in the correct places. Anything else I should look at?


Try swapping the op amp from the boost side with IC2. While you have the IC out of the socket, try reflowing the solder joints of the components involved with IC2. Check to see if the 820p cap is cracked where the leads meet the body.

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peterd237
PostPosted: Wed Dec 19, 2018 4:42 pm 
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no luck switching the ICs and reflowing the joints for those components.
820p does have small chip right above one of the legs. I guess the next step would be to pull it and test it?
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peterd237
PostPosted: Wed Dec 26, 2018 3:53 pm 
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would anyone have a picture of the board with the components labeled (r1,r2,c1,c2...). I am having doubts that I am following the path correctly.
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byoc
PostPosted: Wed Jan 02, 2019 12:07 pm 
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peterd237 wrote:
would anyone have a picture of the board with the components labeled (r1,r2,c1,c2...). I am having doubts that I am following the path correctly.


No. Sorry. Not yet.

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Board index » Build Your Own Clone » Effects Pedal Technical Support » Op amp based Distortions, fuzzes and overdrives

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