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Hello, i bought a used v1.0 xbox some months ago, which i've modded. but lately i've had problems with it. It manifested by some times i would turn it on and it does the 3 on/offs then christmas lights. Then all of a sudden it can work again for 5 times, next day i turn it on again, and it won't boot. Have to take out the motherboard and inspect my solderjoints, all ok, into the xbox and it might work again, if not repeat process etc. past 2 days i've used it, it's been working perfect then i noticed it just suddenly freezes and throws a high pitch sound on the speakers without me doing anything but just idling in xbmc menu somewhere. And now it won't start sucessfully at all. just christmas lights. And no occasional luck booting it up successfully either. I installed a aladdin modchip in it and have long been suspecting the solderwork there, since sometimes it boots and sometimes not. But now i'm thinking it might be the PSU that is the root of the problems. I looked at another thread and did the voltage testing on the 12v plug pin by starting the PSU and not connecting it to the motherboard. All the wires showed correct voltage except two. The blue wire (or grey as it is on the plug pin) is supposed to be 3.3v but shows 0.04v and the yellow wire which is supposed to be 12v but is showing 5.89v. I'm posting a picture of the psu and you can see 1 capacitor that is very bulged, i've marked it with red arrow. Should i swap out these caps with new ones? are they responsible for the incorrect voltage on specifically those 2 pins? Also the big caps on the motherboard is not bulged but i understand they can very well be off also, even it doesn't show to the naked eye. So basically are the problems coming from the PSU or the motherboard, Would it be enough to just swap out the 3 caps on the psu, you think? What about the big black 400V 180uF one? that can be a culprit too? Btw, when i started up the PSU with no load i can hear a sound coming from the big black 400v capacitator. it's buzzingsound with short 10milliseconds stops in between like as if electrolytic fluid is boiling and hissing in there. is that normal? With load it makes a lower clicking sound. it's prob just the hz from the powerline maybe.

So i have got an xbox revision 1.0 for parts. Inside the motherboard was pretty much immaculate with non-leaked clock cap. Sadly the xbox just FRAGged. I did lots of troubleshooting including dumping the eeprom with raspberry pi, testing it with different psu or trying the TSOP bank split trick for coma console. I thought, that the TSOP must be faulty so i ordered aladdin xt. However the holes on 1.0 are filled with solder and hard to clean up. In the end, i soldered each leg of the pinheader individually. It looks ugly, but there are at least pretty wet solder joints and modchips do fit in it. Sadly it still frags. Images: I have: 1. Grounded the bottom d0 point 2. Grounded BT on the aladdin 3. Tested the aladdin in my 1.6 and then reflashing it with indbios 4. Replaced a R7D4 resistor i accidentally desoldered I also remember, there was possibly a short at Q7R1 part. I fixed it, but two pins next to each other are still shorted according to multimeter. The two pins are those closest to the Q in the Q7R1 marking (left down side on the bottom side picture)