!Help! - identifying this IC

[andia]

Hi, does anyone know what IC this is. It is in the outputcircuit of a allen&heath AR2412 stagebox for a livedesk. I have found it to be faulty and want to replace it but I cannot find any matching part, if I search for the labeling.
Does anyone have a clue what IC that could be?
Labeling reads: 8080 705F (or 70SF) JRC

Thank you,
andi

 

[andia]

could it be this one: njm8080? https://www.njr.com/electronic_device/PDF/NJM8080_E.pdf

 

[JohnRoberts]

Just making a WAG (wild guess) the capacitors between pins 1 and 2, and pins 6 and 7, look like we would expect for feedback capacitors across a typical dual op amp footprint (from output to - input).

That would be consistent with the data sheet you found.

JR

 

[doctor]

These are not very good ICs. Allen & Heath uses them in new mixers and they often fail. Good replacement is NJM4580.

 

[andia]

Thank you for your help!

 

[JJ]

Did op amp fix the problem?
I am also working on an Allen Heath with a bad channel

Hi, does anyone know what IC this is. It is in the outputcircuit of a allen&heath AR2412 stagebox for a livedesk. I have found it to be faulty and want to replace it but I cannot find any matching part, if I search for the labeling.
Does anyone have a clue what IC that could be?
Labeling reads: 8080 705F (or 70SF) JRC

Thank you,
andi

Did the new op amp fix the problem?
I am working on a similar Allen Heath mic input issue.

John

 

[andia]

yes, there were also some bad resistors right at the input. this is the replacement I used: https://www.mouser.at/c/?q=513-NJM4580E-TE1

 

[JJ]

yes, there were also some bad resistors right at the input. this is the replacement I used: https://www.mouser.at/c/?q=513-NJM4580E-TE1

I am still having problem with this A&H input. I find several white chip resistors? I don’t have a schematic, so I don’t know the value of these white chip components. I thought they were caps. But they read like resistors.
Can you help with diagnosing this ?