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BillFences

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  1. @KaosEngineerAfter reflowing the caps in case the solder didn't make it all the way through the holes, the xbox was back to not powering on at all: dead short on the cpu caps and the power supply even seemed to enter a kind of overcurrent protection because I couldn't measure any voltage on the motherboard. So, pretty bummed out, I decided to reflow the mcpx chip but to no avail. I moved on to desoldering the cpu and finally there are no shorts! The measurements I got after removing the cpu(everything else soldered on): ~70ohms for C1E2 and the smd caps under the cpu, ~67ohms for C1G10 and 60 ohms for all the other cpu caps. 5 volts on all the cpu caps and the caps under the cpu and also 3.3 volts for the transistor near the Xyclops chip. So it seems like the cpu was really fried. If I can get another cpu, will I just need to solder it back on? Also, do you know what other component I should check? I find it hard to believe that there's nothing else broken if the cpu died.
  2. Ok, I replaced the 5 caps and now it's booting up but it's giving an error: https://imgur.com/a/a25MZ1I It does the same thing with the drive, hdd(which I can hear spin) and AV plugged in. Also I don't see any solder splashes on the motherboard, although I accidentally desoldered an smd capacitor but I didn't know for sure where it came from, so I soldered it next to the VRM chip https://imgur.com/a/Dx1S5R2
  3. These capacitors have a bit higher ESR(32 mOhms instead of 20) and lower lifetime, but I think they're good enough since they cost 1/3 of the panasonic ones, what do you think? Also are there any other capacitors that would be better to replace?(in addition to the clock cap)
  4. I don't have them at hand, can they be replaced with some lower value caps(1000uF or 2000uF) just to see if it at least turns on? Edit Also I could try reflowing the mcpx chip as seen in this topic maybe?
  5. I plugged it in and I read 3.3v. I also read 3.3v on the transistor near the Xyclops chip.
  6. I desoldered the chip and the resistance for C1G10 increased to 161ohms but the caps under the cpu initially show a high value but then quickly stabilize to basically zero as before... if there's nothing else left I might try desoldering the cpu and seeing if the issue is fixed just for the sake of it.
  7. Could you tell me their codes on the PCB? And how I can figure if they're broken?
  8. Oh yeah, you're right I completely forgot about that. In resistance mode it's less than 1 ohm(it oscillates between 0.1 and 0.2 ohms) for the caps under the CPU, C1E2, C2E2 and C1E1. For the caps C1G10 and C1F2 is 153 ohms.
  9. Hi, I'm trying to repair my xbox v1.6 with a Delta 220v PSU because it doesn't power on at all(even the fan isn't spinning). Backstory: the xbox stopped working all of a sudden(it worked just the day before even with the leaked/bulging caps), so thinking that maybe the power and eject buttons got broken, I tried to turn it on by shorting the SW1 Eject or SW2 Power(I can't remember which) to GND according to this diagram of the front panel connector. I don't think this was a good idea since the xbox didn't turn on and I heard a small spark but I'm not totally sure. Now from the PSU, not plugged into the motherboard(so in stand-by I guess), I get a ~5v reading from the orange wires but 0.1v from the blue wire(which should be 3.3v even on stand-by according to this table) and ~0 volts from the other 3.3v and 12v rail as it should be. Moving on to the motherboard, after removing all the bad capacitors, I still get a short between the 5v rail and ground(measuring the pins of psu connector on the motherboard). I also tried measuring the caps under the CPU(starting from C2P1 to C2P17) and they're all shorted to ground. The caps C2E2 and C1E1 too. Also, measuring the VRM(?) FAN5059M I'm getting a short on the pins(apart from GND) 2_SW, 6_VID2, 8_VID0, 20_VFP. All this leds me to believe that the CPU is fried but I can't really wrap my head around how I could have done that, is there something I'm missing/misunderstanding? Image 1 mobo Image 2 mobo Image 3 cpu caps

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Board startup date: April 23, 2017 12:45:48
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