Looking for a replacement but i dont know what this part is called and its hard to see the part number on it. It looks like theres another 1 directly below it but its a different number. Is it the same value or do i need this exact part? Can i get 1 off a donor if the numbers dont match?Think i have a cap shorted on the other side of the board not sure if its related to each other or its just low impedance. Thank you
The part you’ve highlighted in blue, assuming that’s the one with all the chips in it in the other images?, then that’s a MAX8969 . Tell me if that isn’t the IC with damage though as those two next to each other are different parts. (it’s hard to follow all your images)
Component highlighted in red isn’t a cap but rather, an inductor. It’s normal afair.
You shouldn’t be powering on the board at all (or using your thermal cam) when there is / possibility of shorts on the board That being said, I think given the obvious damage, the IC is probably faulty
Lol thanks for checking it out. I powered it to check the back and spoted it real quick then inspected the part. The color i highlighted dont mean anything i just did it without thinking. I dont think its a max chip idk all i can see is 002 on the bottom. I think its the same bga as the 1 under it thats label ajz003 i think its ajz002 but it looks like half of it is damaged. Idk if its the sane chip just numbered like 001, 002 etc. Let me see if i can make it clearer.
Pic 1 is the bga with the solder ball on the back of the board right top circled blue and it looks like the same chip right under it thats label ajz003.
Pic 2 is directly on the other side where i think a short is but not sure. Is that the inductor? Circled red. I do have a donor. The chip looks the same just have different numbers on it. Would it be ok to pull it? I would prefer to get a replacement since it looks like it has to be reballed (might be out of my skill level) i cant find a replacement. I would try and learn how to reball it
The one you circled in red in the previous pic is an inductor and it’s fine, nothing wrong. Relates to a negative rail, hence why your measuring a short to ground.
Thiese are very simple step up converters, provided the pad pattern / pinout and of course specifications (emphasis on that last part) is the same and the package type etc, any is fine. Batch wouldn’t ordinarily be a concern
Youre right my donor says alj 023 so that would be ok to use? I just couldnt make out half of it and assume it was the same chip as the 1 below it. I would rather get a new 1 thats reballed already
That being said, I think given the obvious damage, the IC is probably faulty
