Hi,
Long time lurker. I've been tinkering with GBA SPs for a few months now, and I've purchased a few for-parts boards. One in particular has an issue where it won't charge but will turn on with a battery and a green battery indicator.
I've probed the charging port and it has roughly 4.8v. EM8 also appears to be fine as well as it's a well-known problem that I went to second immediately after the port.
Started probing around some more, and found there's a dead short on R53. Following the short, I kept probing more components and found a short on C32 as well. Removing R53 and testing again show it's definitely defective. C32 is a working component though, and the short only appears when soldered to the board. By my understanding, it's apart of the charging circuit so it would make sense that it's not charging.
Then there's this component that's not clearly marked on the silk screen which is also showing a short to ground:
Ignore the cracked coil. The core is intact and it's still functional, thought I have no easy way to test inductance.
Seems like I'm on a bit of a wild goose chase. Anyone else have a known working AGT/101 board that can help with probing that particular component, and the other mentioned above so I don't go crazy chasing a short that may or may not exist?
Oh, and the weird thing about this is it'll turn on just fine the first time, but won't turn back on if you flick it off and on again. Take the battery out, give it a few minutes, put the battery in and it'll turn on without any problems.
Any help would be greatly appreciated.
Long time lurker. I've been tinkering with GBA SPs for a few months now, and I've purchased a few for-parts boards. One in particular has an issue where it won't charge but will turn on with a battery and a green battery indicator.
I've probed the charging port and it has roughly 4.8v. EM8 also appears to be fine as well as it's a well-known problem that I went to second immediately after the port.
Started probing around some more, and found there's a dead short on R53. Following the short, I kept probing more components and found a short on C32 as well. Removing R53 and testing again show it's definitely defective. C32 is a working component though, and the short only appears when soldered to the board. By my understanding, it's apart of the charging circuit so it would make sense that it's not charging.
Then there's this component that's not clearly marked on the silk screen which is also showing a short to ground:
Ignore the cracked coil. The core is intact and it's still functional, thought I have no easy way to test inductance.
Seems like I'm on a bit of a wild goose chase. Anyone else have a known working AGT/101 board that can help with probing that particular component, and the other mentioned above so I don't go crazy chasing a short that may or may not exist?
Oh, and the weird thing about this is it'll turn on just fine the first time, but won't turn back on if you flick it off and on again. Take the battery out, give it a few minutes, put the battery in and it'll turn on without any problems.
Any help would be greatly appreciated.