Analog of operational amplifier

[Fedor]

Hello everyone. I need help to find analog of operational amplifier. Original one broken on circuit of my 3D printer. I found some similar parts, but i am not sure, that i right about this parts, Photo of original amplifier below.

 

[KeepItSimpleStupid]

it should be an OPA2171AID. Search for an OPA2171AD datasheet.

 

[gophert]

it's a strange item to fail, but, some circuits on 3D printers are not well designed.
You may want to review the load that it is driving. Maybe a bit too much current draw.
Alternatively, it could simply be a loose solder joint. Or, it could be something up or down stream in the circuit.

 

[Fedor]

it should be an OPA2171AID. Search for an OPA2171AD datasheet.

Thank you! I found the OPA2171AID datasheet, hope replace with that can help me.

 

[gophert]

Be careful desoldering and resoldering the surface mount device. Watch some YouTube videos if you haven't done it before.

 

[Fedor]

it's a strange item to fail, but, some circuits on 3D printers are not well designed.
You may want to review the load that it is driving. Maybe a bit too much current draw.
Alternatively, it could simply be a loose solder joint. Or, it could be something up or down stream in the circuit.

Thank you for you answer. Unfortunately, i'm not working with the electronics. I bring the circuit board at the local service, service guy change broken transistor's, and then i connected all wire, and it works, but wrong. And then i call to a service guy, he told be that the problem in this part, so i should find the new one. So this is all story.
P.S. I by my self broken it.

I accidentally closed the contacts, and a short circuit passed.

 

[gophert]

Thank you for you answer. Unfortunately, i'm not working with the electronics. I bring the circuit board at the local service, service guy change broken transistor's, and then i connected all wire, and it works, but wrong. And then i call to a service guy, he told be that the problem in this part, so i should find the new one. So this is all story.
P.S. I by my self broken it.

I accidentally closed the contacts, and a short circuit passed.

Ah, now I understand.

you can still watch a YouTube video,soldering is easier than you might think - even I can do it.

 

[schmitt trigger]

I would strongly advise that you replace the opamp with the same part number.

Without having a good knowledge of the circuit and its operation, and the technical reasons to have chosen this particular opamp, replacing it blindly may cause to operate incorrectly.

Now, I am sure that you will come back saying that you can’t find that exact part number locally.
In that case use whatever you got, a LM358 or whatever, and you may be lucky and still will work correctly.