So a buddy of mine gave me his OG xbox which was having issues. It suffered from the failed clock capacitor issue, the capacitor had leaked on the board. He opened it up and pulled it off with a pair of pliers. After that, he said he couldn't turn the xBox off so I asked if I could try my hand at it
I ordered up a spare clock capacitor, opened up the xBox and there was a lot of corrosion and damage near the old capacitor location. I cleaned it all up with IPA, and check for continuity between all the components in the area, including through the vias on the board, and everything checks out. I replaced the clock capacitor, and plugged the unit it. As soon as it was plugged in, it turned on, all by itself, and you cannot turn it off. If you hold down the power button, it turns off and back on, by itself. If you select "Shutdown" from the menu, it turns off, and back on by itself. Also, even with the new clock capacitor installed, it is not remembering the time between reboots, it is still resetting
I pulled out the board the switchs are connected to and checked the switches and they check out fine, I thought maybe the power switch was shorted closed but that does not appear to be the case.
I haven't spent a ton of time on it yet, but one thing I found was a chip labeled "203 B10 35CL". When I google that I don't find anything, but if I Google "B10 35CL" I get datasheets that look like this chip, and they tell me that is a schottky power rectifier, with two legs acting as diodes leading to the one leg on the other side. But when I check for continuity and get an Ohms reading on it, I am getting continuity and identical resistance in both directions, which doesn't seem to be right.
Since the clock is not keeping set even with the new capacitor in place, I am guessing that means there is some break somewhere keeping the cap from powering the clock. I dont know if that would have anything to do with the inability for the unit to turn off
Ideas?
I ordered up a spare clock capacitor, opened up the xBox and there was a lot of corrosion and damage near the old capacitor location. I cleaned it all up with IPA, and check for continuity between all the components in the area, including through the vias on the board, and everything checks out. I replaced the clock capacitor, and plugged the unit it. As soon as it was plugged in, it turned on, all by itself, and you cannot turn it off. If you hold down the power button, it turns off and back on, by itself. If you select "Shutdown" from the menu, it turns off, and back on by itself. Also, even with the new clock capacitor installed, it is not remembering the time between reboots, it is still resetting
I pulled out the board the switchs are connected to and checked the switches and they check out fine, I thought maybe the power switch was shorted closed but that does not appear to be the case.
I haven't spent a ton of time on it yet, but one thing I found was a chip labeled "203 B10 35CL". When I google that I don't find anything, but if I Google "B10 35CL" I get datasheets that look like this chip, and they tell me that is a schottky power rectifier, with two legs acting as diodes leading to the one leg on the other side. But when I check for continuity and get an Ohms reading on it, I am getting continuity and identical resistance in both directions, which doesn't seem to be right.
Since the clock is not keeping set even with the new capacitor in place, I am guessing that means there is some break somewhere keeping the cap from powering the clock. I dont know if that would have anything to do with the inability for the unit to turn off
Ideas?
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