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Xbox Won't Boot


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#1 Huwawa

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Posted 05 February 2007 - 04:30 AM

So i installed an Xecuter 2.6CE(on a 1.6), and now the Xbox doesn't boot. It doesn't even turn on any lights, or the fan. What could have gone wrong? Could the board have been grounded? Any help would be appreciated!

#2 DarkMatter

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Posted 05 February 2007 - 07:46 AM

Check this:
http://www.llamma.co...ox_no_power.htm
Regards,
DarkMatter

#3 jcdenton2003

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Posted 05 February 2007 - 10:54 AM

you got it plugged in? Sounds stupid but iv done it loads of time blink.gif

#4 MourningWood

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Posted 05 February 2007 - 03:08 PM

The link that DarkMatter posted above is valid. It happened to me once and I changed it out then it worked perfect. Its a little small to solder in but its doable.

#5 Huwawa

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Posted 05 February 2007 - 05:00 PM

I tried measuring that component with the multimeter, and this is what I got: one point got .4, one point got .4 something, and another got 4.65 and 4.85 (it jumped around). Is this blown?

#6 MourningWood

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Posted 05 February 2007 - 05:56 PM

Not sure I didn't measure mine. Also check your power supply to make sure it has power coming out of it. Most likely it is that part though.

#7 Huwawa

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Posted 06 February 2007 - 12:36 AM

What points would I measure?

#8 Huwawa

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Posted 06 February 2007 - 04:52 AM

I founf a diagram of the transistor. It looks like 2 is the one to measure.

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#9 RDC

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Posted 06 February 2007 - 05:58 AM

3 is the one you want to measure, the Collector (the lead that's by itself). Make the measurement from ground to the Collector and see how many volts it is. It should be a steady 3.25v, if it's under/over that or jumps around then it's bad.

#10 Chancer

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Posted 06 February 2007 - 01:58 PM

IPB Image

#11 Huwawa

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Posted 08 February 2007 - 10:56 AM

It's putting out 0.11v. I guess I'm ordering it. rolleyes.gif

Thanks everyone!

#12 Coldfire

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Posted 09 February 2007 - 05:34 AM

I have replaced that chip 3 times in my 1.6 xbox and I'm still not getting a reading of 3.25V only 2.36V or thereabouts, could there be any reason for this, is the transistor the only part susceptible to this kind of damage in the 1.6 xbox? The full detail's of my problem are described here: http://www.smartxx.c...h...d=5674&sid=
Any help would be graciously appreciated.

#13 DarkMatter

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Posted 10 February 2007 - 03:32 AM

QUOTE
I have replaced that chip 3 times in my 1.6 xbox and I'm still not getting a reading of 3.25V only 2.36V or thereabouts, could there be any reason for this, is the transistor the only part susceptible to this kind of damage in the 1.6 xbox?

Check my mini tutorial on another website. Check to see if the transistors you've already replaced are really at fault:
http://jansforums.jc...c.php?p=149#149
Please let us know what readings you get.
Regards,
DarkMatter

#14 Coldfire

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Posted 11 February 2007 - 08:29 AM

They measured 914 & 926 in the diode test and didn't register any MOhm's in the leakage test. They are labelled 3Dp which are BC856, they were recommended as an alternative to the MMBT3906 which I couldn't find any of. Got the BC856's from Jaycar.

#15 DarkMatter

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Posted 12 February 2007 - 02:28 AM

Try measuring the following resistor:

IPB Image

It should measure zero ohms. Its connected between the collector of Q7C2 and pin 80 of the Xyclops IC. I'm assuming its there for protection.
Regards,
DarkMatter




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