What looks like sanded chips so presumably no markings there. No markings on the PCB (check the other side but I doubt it will have anything) and no repair manuals I can see in a casual search (original or third party) for what looks like a chancer company making an android tablet.
Good luck with that one, and that is before we debate whether that thing blowing up might or might not have took out something else or been caused by something else down the line failing.
If you can find repair manuals then great. If said chancer company are just a badging company and the other more or less identical devices have repair manuals or leaked parts lists/specs then so much the better.
Having an identical model you can compare against might get you somewhere if it is a passive device (and they do look like fairly wide tracks, leading either to a signal or ground pad, and via stitching is usually done only for a reason like noise or better conductivity).
If the big chip it leads to has numbers on it then a reference implementation in its own diagram might be the order of the day as far as figuring out what it is. There are also very similar looking chips dotted around which might be the same, though equally they might not be.
Good luck with that one, and that is before we debate whether that thing blowing up might or might not have took out something else or been caused by something else down the line failing.
If you can find repair manuals then great. If said chancer company are just a badging company and the other more or less identical devices have repair manuals or leaked parts lists/specs then so much the better.
Having an identical model you can compare against might get you somewhere if it is a passive device (and they do look like fairly wide tracks, leading either to a signal or ground pad, and via stitching is usually done only for a reason like noise or better conductivity).
If the big chip it leads to has numbers on it then a reference implementation in its own diagram might be the order of the day as far as figuring out what it is. There are also very similar looking chips dotted around which might be the same, though equally they might not be.
I have not found manuals or diagrams. The big chip is the ic charging chip. The smaller ones near it do not have any numbers so I think I will search for broken tablet boards to find anything similar
--------------------- MERGED ---------------------------
The big chip is axp288c
--------------------- MERGED ---------------------------
The big chip is axp288c
That might do something
Sticking axp288c into
https://octopart.com/
https://www.eem.com/search/axp288c/distributor
https://www.findchips.com/search/axp288c
https://www.alldatasheet.com/datasheet-pdf/pdf/1132504/XPOWER/AXP288C.html
https://www.datasheet4u.com/datasheet-pdf/X-Powers/AXP288C/pdf.php?id=1353424
and plain old search (in my case on duckduckgo) spits out a datasheet eventually
Datasheet then (attached in PDF form) has a standard application diagram which could be useful -- most datasheets will give the basic form of a circuit it expects to be used in, now you will eventually encounter someone that did something differently but start with the suggested one.
The little white triangle usually indicates pin 1 and it looks like a small hole next to it as well (slightly red in that picture but you can see in real life more easily).
That looks like pin 9 which would be LX4
That then goes to a 1uH inductor which also has a 22 uF 6.3V capacitor (the smaller brown things are usually that) and then onto "BUCK4" which is probably a buck regulator (certainly is in the diagram). A power surge taking out an inductor is common enough.
https://www.electronics-notes.com/a...-step-down-buck-regulator-dc-dc-converter.php if you are unfamiliar with those.
Bonus here is the ideal diagrams see most other LX pins going to same rated inductors, and a sanity check says 8 of them in that diagram and 8 things there on that picture says probably is what it is.
You can then source a 1micro Henry inductor if you like and try replacing it (might even be able to steal one from elsewhere on the board if elsewhere does something less interesting as a quick test). However I will return to not knowing what caused it to go pop in the first place (could be a power surge externally, cheap charger, something internal, bad component, bad design in the first place, damage on the board/charge port, battery going pop), nor what other damage might have been done as it did -- think a slightly more advanced version of replacing a fuse while you still have a short. That said it is a common component and should not cost really anything so play it as you will.
Sticking axp288c into
https://octopart.com/
https://www.eem.com/search/axp288c/distributor
https://www.findchips.com/search/axp288c
https://www.alldatasheet.com/datasheet-pdf/pdf/1132504/XPOWER/AXP288C.html
https://www.datasheet4u.com/datasheet-pdf/X-Powers/AXP288C/pdf.php?id=1353424
and plain old search (in my case on duckduckgo) spits out a datasheet eventually
Datasheet then (attached in PDF form) has a standard application diagram which could be useful -- most datasheets will give the basic form of a circuit it expects to be used in, now you will eventually encounter someone that did something differently but start with the suggested one.
The little white triangle usually indicates pin 1 and it looks like a small hole next to it as well (slightly red in that picture but you can see in real life more easily).
That looks like pin 9 which would be LX4
That then goes to a 1uH inductor which also has a 22 uF 6.3V capacitor (the smaller brown things are usually that) and then onto "BUCK4" which is probably a buck regulator (certainly is in the diagram). A power surge taking out an inductor is common enough.
https://www.electronics-notes.com/a...-step-down-buck-regulator-dc-dc-converter.php if you are unfamiliar with those.
Bonus here is the ideal diagrams see most other LX pins going to same rated inductors, and a sanity check says 8 of them in that diagram and 8 things there on that picture says probably is what it is.
You can then source a 1micro Henry inductor if you like and try replacing it (might even be able to steal one from elsewhere on the board if elsewhere does something less interesting as a quick test). However I will return to not knowing what caused it to go pop in the first place (could be a power surge externally, cheap charger, something internal, bad component, bad design in the first place, damage on the board/charge port, battery going pop), nor what other damage might have been done as it did -- think a slightly more advanced version of replacing a fuse while you still have a short. That said it is a common component and should not cost really anything so play it as you will.
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BakerMan
I rather enjoy a life of taking it easy. I haven't reached that life yet though.
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S @ salazarcosplay:@Xdqwerty FMA seemed more metaphysical. Like Alchemy was a mysterious comic phenomenon, that gave you an experience.+1
In brotherhood it seemed more direct. Like there was a "god of alchemy that" one met. And it liked humbling people -
S @ salazarcosplay:At the end of the game Ed beather Truth at his own game giving up his ability to do alchemy
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S @ salazarcosplay:@Xdqwerty good. thats great fma takes more time to to build up the beginning. brotherhood rushed the beginnign because the beginning had already been told+1
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