I've got a tech'ie question for some of the people knowledgeble about the xbox hardware.
I have an older 1.2/1.3 box that went bad about 4 months after I bought it from Wal mart. MS wanted near $100 to fix, so I said screw that. Never did it have a mod chip on it, nor was it ever opened before it started to act up. "The coma symptoms", as it tries to turn on/off/on/off/on/off, but won't. I CAN occasionally get it to work. Below is the deal on it.
I first installed the X3 chip to maybe bypass the MS bios. This worked great for about 4 months. Booted and ran every time via X3 mod bios, although it would not boot with mod chip turned off. I was happy.
As time went on, it degraded, and eventually would not turn on at all. HOWEVER, I could unplug it for 2 to 3 days, plug it back up, and it would run for about 3 hours, then freeze up as if it was getting too hot. However, its not a heat problem, I had fans on 100%, and case open, with fans blowing on it. even put on high grade thermal grease between the processors and HSinks.
I replaced some capacitors on the board. Just guessing here and there. (Correct Caps and polarity by the way) . Still same symptoms. worked only after keeping it unplugged 2-3 days. No way I could replace those small resistors if I wanted.
I literally have to unplug it for 2 to 3 days, as if to let power discharge from a capacitor or something, before it decides to turn on again. Makes no sense to me. Power should discharge within half hour or so, so that can't be it? (But I am not an electronic inclined person at all. I only know how to do basic soldering, cap, resistor replacement. Not PCB troubleshooting)
I put new PSU in it, same symptoms (both psu's tested to work). I've literally went over the board with a fine tooth comb and cannot find anything. The PSU works off of TTL I assume, so I tried a new switch. no help
Got mad, pulled the X3 off the board, and wire soldered it onto a 1.0 system, and it works perfectly on it. I even used the case and TTL switch from the broken one.
Any idea what the failure cause of the other box may be ? bad resistor, capacitor, TSOP chip, etc ? I'm all ears before I dump this thing in the garbage. It's never been on xbox live, and still has the mated HD, so it may be worth something for parts, although I did take my Samsung DVD from it and swapped it with the cruddy Thompson in my 1.0.
/Siddy
I have an older 1.2/1.3 box that went bad about 4 months after I bought it from Wal mart. MS wanted near $100 to fix, so I said screw that. Never did it have a mod chip on it, nor was it ever opened before it started to act up. "The coma symptoms", as it tries to turn on/off/on/off/on/off, but won't. I CAN occasionally get it to work. Below is the deal on it.
I first installed the X3 chip to maybe bypass the MS bios. This worked great for about 4 months. Booted and ran every time via X3 mod bios, although it would not boot with mod chip turned off. I was happy.
As time went on, it degraded, and eventually would not turn on at all. HOWEVER, I could unplug it for 2 to 3 days, plug it back up, and it would run for about 3 hours, then freeze up as if it was getting too hot. However, its not a heat problem, I had fans on 100%, and case open, with fans blowing on it. even put on high grade thermal grease between the processors and HSinks.
I replaced some capacitors on the board. Just guessing here and there. (Correct Caps and polarity by the way) . Still same symptoms. worked only after keeping it unplugged 2-3 days. No way I could replace those small resistors if I wanted.
I literally have to unplug it for 2 to 3 days, as if to let power discharge from a capacitor or something, before it decides to turn on again. Makes no sense to me. Power should discharge within half hour or so, so that can't be it? (But I am not an electronic inclined person at all. I only know how to do basic soldering, cap, resistor replacement. Not PCB troubleshooting)
I put new PSU in it, same symptoms (both psu's tested to work). I've literally went over the board with a fine tooth comb and cannot find anything. The PSU works off of TTL I assume, so I tried a new switch. no help
Got mad, pulled the X3 off the board, and wire soldered it onto a 1.0 system, and it works perfectly on it. I even used the case and TTL switch from the broken one.
Any idea what the failure cause of the other box may be ? bad resistor, capacitor, TSOP chip, etc ? I'm all ears before I dump this thing in the garbage. It's never been on xbox live, and still has the mated HD, so it may be worth something for parts, although I did take my Samsung DVD from it and swapped it with the cruddy Thompson in my 1.0.
/Siddy
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