Good morning guys,
I am resuming an old service on an Xbox X Series that I really want to repair. I summarise what has been done because I can't find my previous post.
The Xbox initially did not turn on, no LED, no beep. Found short circuit on the 12V connector on the bottom board. Injecting 1.5V on the positive side of one of the shorted capacitors to find with the thermal camera which capacitor was shorted, no gave me useful information. The board draws 2.80A (1.5V), but from the thermal camera images I don't see any component getting hot.
I removed the coils one by one until the short circuit on 12V seems to have disappeared (have 70ohm resistance to Ground in the connector pin). The coil I removed when the short circuit disappeared is the one highlighted in the figure.
I removed mosfet (IC) M86965 corresponding to the coil I had removed and with which I was no longer registering a short between 12V and ground but resistance to ground was only 70ohm. After removing the mosfet (not without difficulty 450 degrees air gun and pre heater at 200 from the bottom) the resistance between the 12V connector pins and ground increased to over 20kohm. Then I ordered a mosfet, soldered it, and verified that there was no more short circuit on 12V. I then reassembled everything.
The XBOX now turns on (beep, led, and fan) but unfortunately I can't see anything on the screen. Do you think I have forgotten something?
I have tried also safe mode and low res… no output
No synchronization with the controller, I tried with sync keys and connecting via USB, but it does not sync, the led on the controller blinks endlessly. Could it be a problem with the MP86965 mosfet I replaced?
HDMI pin seems ok.
There isn't a way to obtain an error code from XBOX Series X?
I am resuming an old service on an Xbox X Series that I really want to repair. I summarise what has been done because I can't find my previous post.
The Xbox initially did not turn on, no LED, no beep. Found short circuit on the 12V connector on the bottom board. Injecting 1.5V on the positive side of one of the shorted capacitors to find with the thermal camera which capacitor was shorted, no gave me useful information. The board draws 2.80A (1.5V), but from the thermal camera images I don't see any component getting hot.
I removed the coils one by one until the short circuit on 12V seems to have disappeared (have 70ohm resistance to Ground in the connector pin). The coil I removed when the short circuit disappeared is the one highlighted in the figure.
I removed mosfet (IC) M86965 corresponding to the coil I had removed and with which I was no longer registering a short between 12V and ground but resistance to ground was only 70ohm. After removing the mosfet (not without difficulty 450 degrees air gun and pre heater at 200 from the bottom) the resistance between the 12V connector pins and ground increased to over 20kohm. Then I ordered a mosfet, soldered it, and verified that there was no more short circuit on 12V. I then reassembled everything.
The XBOX now turns on (beep, led, and fan) but unfortunately I can't see anything on the screen. Do you think I have forgotten something?
I have tried also safe mode and low res… no output
No synchronization with the controller, I tried with sync keys and connecting via USB, but it does not sync, the led on the controller blinks endlessly. Could it be a problem with the MP86965 mosfet I replaced?
HDMI pin seems ok.
There isn't a way to obtain an error code from XBOX Series X?
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