ParkingLotLust
Member
If youve been around for awhile, chances are you've seen my other thread(s) about it. I came across the board the other day, and now that I have a bit more experience, I figured I'd give it another shot.
The wall wart puts out ~6.9v, so it's pretty unregulated. The top chip is an RT9202 Single Synchronous Buck PWM DC-DC Controller, but I dont know what the bottom chip is - it says this on it:
9936
Δ31B9M
Anyways, as you can see in the picture, one one side of the chip, I have power, but on the other side, nothing. This could be why I have no power on the rest of the board.
If you have any ideas, need more info, or want to talk to me on MSN (so you can say try this and I can try it and tell you what happens in real-time), let me know. I would greatly appreciate any input!
EDIT Ignore the flux residue on CA14, I touched it up with a soldering iron (along with the rest of the points in the area) to make sure there were no cold joints.
The wall wart puts out ~6.9v, so it's pretty unregulated. The top chip is an RT9202 Single Synchronous Buck PWM DC-DC Controller, but I dont know what the bottom chip is - it says this on it:
9936
Δ31B9M
Anyways, as you can see in the picture, one one side of the chip, I have power, but on the other side, nothing. This could be why I have no power on the rest of the board.
If you have any ideas, need more info, or want to talk to me on MSN (so you can say try this and I can try it and tell you what happens in real-time), let me know. I would greatly appreciate any input!
EDIT Ignore the flux residue on CA14, I touched it up with a soldering iron (along with the rest of the points in the area) to make sure there were no cold joints.
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