Hey guys,
So ive got hold of a bust board-
the person that butchered it with a soldering iron never got to the stage of flashing the nand - (nandx didnt read it).
Now it does nothing, no power, no lights, PSU brick shows red...
I understand this is most commonly a STBY_CLK problem.
I started by trying to undo qsb, finding a particularly bad STBY_CLK point.
The r4b24 resistor was bust, and the solderable points near it all but lost.
I soldered a replacement resistor onto the trace on the left (tested continuity with a multimeter further down the trace, and the next scratched off bit... its definitely on the trace.),
The trace on the other side was too fragile and small, but i soldered the other side onto the point below c4n20 on the underside... This is an alt point i found for the RIGHT had side of the resistor... This checks out with research online and a multimeter confirms the connection between this point and the tiny scrap of trace that was left to the right of the resistor.
all the other resistors in this area are fine, measuring 33, the reason their trace is scratched further down is because i was testing that they were not lifted from the board, but still soldered.
as for the other points, i havent done the tidiest job removing them, but i see no bridging, no damage to the trace and no reason for this problem...
This is my first time repairing the xbox, so bear in mind that i may have missed something really stupidly obvious.
Many thanks for any help
Dan
image:
http://cl.ly/1M3I0P0W2k0o272j043I
http://cl.ly/0P2x1G0E3n13410t3r1z
So ive got hold of a bust board-
the person that butchered it with a soldering iron never got to the stage of flashing the nand - (nandx didnt read it).
Now it does nothing, no power, no lights, PSU brick shows red...
I understand this is most commonly a STBY_CLK problem.
I started by trying to undo qsb, finding a particularly bad STBY_CLK point.
The r4b24 resistor was bust, and the solderable points near it all but lost.
I soldered a replacement resistor onto the trace on the left (tested continuity with a multimeter further down the trace, and the next scratched off bit... its definitely on the trace.),
The trace on the other side was too fragile and small, but i soldered the other side onto the point below c4n20 on the underside... This is an alt point i found for the RIGHT had side of the resistor... This checks out with research online and a multimeter confirms the connection between this point and the tiny scrap of trace that was left to the right of the resistor.
all the other resistors in this area are fine, measuring 33, the reason their trace is scratched further down is because i was testing that they were not lifted from the board, but still soldered.
as for the other points, i havent done the tidiest job removing them, but i see no bridging, no damage to the trace and no reason for this problem...
This is my first time repairing the xbox, so bear in mind that i may have missed something really stupidly obvious.
Many thanks for any help
Dan
image:
http://cl.ly/1M3I0P0W2k0o272j043I
http://cl.ly/0P2x1G0E3n13410t3r1z
