Audient ID14 opamps MOD issue

[maosante]

If you really can't find / don't want to find 0603 X7R 100nF/25v caps, sure, I guess a through-hole one is better than none at all.

Well, i couldn't find it easily here,

If you really can't find / don't want to find 0603 X7R 100nF/25v caps, sure, I guess a through-hole one is better than none at all.

it seems to be too little in comparison to the original one. Does it matter?

 

[maosante]

Well, i couldn't find it easily here,

it seems to be too little in comparison to the original one. Does it matter?

Maybe this is a buffer amplifier or second stage opamp. Since it is not tied to an specific source 1/2 are for the inputs I guess.

 

[Khron]

it seems to be too little in comparison to the original one. Does it matter?

What "seems to be too little"? C176 is 0603-sized (imperial), R179 is 1206, C240 / R180 / R182 are 0805.

Or did you mean the value? Try to remember that i'm "only" human, and i can't read minds. If it's the value you're concerned about, remove and measure C190 (connected to pin 8).

If pin 5 is connected to ground (via a trace on the board), that could mean the second half of that opamp is connected as inverting (positive input to ground).

 

[maosante]

What "seems to be too little"? C176 is 0603-sized (imperial), R179 is 1206, C240 / R180 / R182 are 0805.

Or did you mean the value? Try to remember that i'm "only" human, and i can't read minds. If it's the value you're concerned about, remove and measure C190 (connected to pin 8).

If pin 5 is connected to ground (via a trace on the board), that could mean the second half of that opamp is connected as inverting (positive input to ground).

I think the value can vary, also the size. What would a 47uf do? 1210

C132 seems to be 0603.

 

[Khron]

C132 seems to be 0603.

That's 0402 actually.

I think the value can vary, also the size. What would a 47uf do? 1210

Why? Or just what the hell IS your goal, after all???

 

[maosante]

That's 0402 actually.



Why? Or just what the hell IS your goal, after all???

Your right, just placed the 0603. But the inputs still not working as expected, then I will just opt to let them out since outputs do work with the mods.

 

[maosante]

By the way, checked connections again, and 1st pin at first opamp is not connected to anything, I think the trace burnt out. Is there a manual way to connect it with a bare wire. I know is not the right way but which other posible solution is there?

*Picture is before mod.

 

[Khron]

"Not connected to anything"? How did you determine that?

 

[maosante]

"Not connected to anything"? How did you determine that?

by running a continuity test on opamp 2 pin 1 (output). This one is connected to near by components.

 

[Khron]

Once again, you're speaking as if i (or anyone else) can read your mind, or know exactly what you mean.

PS. "Continuity test" implies two test points. "Opamp 2 pin 1" is only one.

 

[Newmarket]

Not sure there us much mileage in pursuing this tbh ?