What could cause this?

[dogmanky]

2.6b lite on a V1.6 Xbox. Chip enabled, boots fine to Evox, however the IGR reboots the entire box.

Chip Disabled and the box FRAGS.

If the D0 has come loose, will the xbox still boot with chip enabled?

And lastly, in this scenario, what other issues could I be facing if I just leave it as it is?

Thanks for helping a n00b!

 

[Fantmx]

What bios do you have on your chip?

When the Xbox frags, do you get any error messages?

No, the D0 is what tells the Xbox to boot from the LPC and not the onboard TSOP.

None if you don't plan on using LIVE.

 

[dogmanky]

What bios do you have on your chip?

When the Xbox frags, do you get any error messages?

No, the D0 is what tells the Xbox to boot from the LPC and not the onboard TSOP.

None if you don't plan on using LIVE.

1. It's been a while, but I beleive its M8plus_16

2. Could it be that D0 is soldered to the wrong place and perhaps just grounded? No error messages.. just frag... w/no video.

Thanks for the replies..

 

[MKChampion]

did you mess around with the original M$ files on the drive?
is it a new drive or stock?

 

[dogmanky]

its a new HDD but Im pretty sure it wont boot with the untouched stock hdd (with chip off) either. I wont be able to test it for a week or so.. but I definately will. thanks again.

 

[dcflux]

I had this same problem recently and had to search to try and find a solution but didn't find any.

I use a X3CE, with a Propanel on a V1.0 Xbox. But I assume it is close enough to the 2.6 you are having problems with. I also wan't to get the word out because alot of people are having problems in this area.

Symptom: Modchip boots fine, but when disabled or removed (Pulled off LPC header and D0/HD/LAN disconnected from chip.) the Xbox turns on and off 3 times and then flashes red and green (FRAG) with no video or audio.

Cause: This means it is a Bios problem right off the bat, If the Bios loaded you would at least get either a generic or a numbered error code on the screen. Unless you didn't plug in the A/V cable in which case the box will flash orange and green (FOAG) with no video or audio, but that is a different guide all together.

What happend with me was my D0 wire became wedged in between the landing area for a screw hole on the motherboard and the grounded RF shield of the Xbox. So when I tightened the motherboard back in the case, the insulation on the D0 line chaffed and shorted to ground.

It is also possible that solder is bridged in between the vias where the D0 tap point is, but this wasn't the case with me as I took a NASA course on soldering, and I use 2% silver solder.

I don't care what anyone says in a how to guide that you find on the net by some guy that thinks everyone else is a f*ing n00b or encourages drinking while you are modding, but you should not attempt to solder D0 with a iron that came from Radio Shack. If you do not under stand what that means, you should not be soldering period. Using a 50 - 150 soldering gun on 25mil surface mount pads is the equivelent of doing brain surgery with a chainsaw. And don't trust idiots that come at you with the window de-fogger repair kit either.

Anyway...

Cure: To repair I cut off about 1 inch of the D0 wire, the part that was chaffed. Then I stripped 1/8" of insulation from the D0 wire and "tinned" it with solder, then I cut it to a length I felt suitable. Then I soldered it back to the D0 point. You can also just tape the chaffed part of the wire if you are a lazy bastard. Be sure to tape the wires to the bottom of the motherboard care of Scotch 33+ electrical tape, routing your wires around the "Pressure Points".

Or if you have a botched solder job, just suck the TSOP via area clean with a Soldapult or Pace micro solder sucker. Copper braid is almost worthless compared to a decent spring loaded solder sucker. Then once the area is cleaned, try attaching D0 again.

Explanation: In order to make the Xbox think the internal bios is corupt and go out to the LPC bus for a new one, the mod chip holds the D0 line to ground for 1/2 second during boot up. If the line is stuck on ground there is no way to boot from the internal TSOP as all the data read from it would be corupt, but you will still be able to boot from a modchip fine.

Another tell tale sign is if you also have the TSOP wired for onboard flashing like I do, Raincoat will not recognize the chip.


Other Symptoms: If the Xbox is doing the reverse, meaning boots fine with modchip disabled, you most likely have a bad or incompatible Bios flashed in the modchip or you are on a bank with nothing in it. Example, I am currently running 3944K in one bank of the Xbox and on the TSOP but the next version up which is 40 something is not compatible and the box will frag. Try booting your modchip in backup mode to get to Flash 3.0.1 by holding both eject and power in until the LED turns purple.

 

[Fantmx]

Or if you have a botched solder job, just suck the TSOP via area clean with a Soldapult or Pace micro solder sucker. Copper braid is almost worthless compared to a decent spring loaded solder sucker. Then once the area is cleaned, try attaching D0 again.

Solder braid is better than a solder sucker. Many people have wrecked their LPC area using a solder sucker. If you know how to use the braid, it takes almost no time at all, and works very well.

Other Symptoms: If the Xbox is doing the reverse, meaning boots fine with modchip disabled, you most likely have a bad or incompatible Bios flashed in the modchip or you are on a bank with nothing in it. Example, I am currently running 3944K in one bank of the Xbox and on the TSOP but the next version up which is 40 something is not compatible and the box will frag. Try booting your modchip in backup mode to get to Flash 3.0.1 by holding both eject and power in until the LED turns purple.

Why would you post this information in the 2.6 section? You cannot use an X3 bios on a 2.6, and there is no backup bios on a 2.6, so pushing both power and eject does nothing.

 

[dcflux]

I was aiming the post to both people with a X3 and a X2.6. I don't own a 2.6 but the information should be at least close enough for someone with an IQ over 100 to bridge the gaps on their own.

You know, trying to get as much information out into the open, unlike people like you with "Please do not PM me for help, I will not answer." Yeah, way to give support to people in need.

Braid is useless unless you intend to use it for grounding straps or buss wire when doing a prototype board.

I have moded 5 Xboxes to have LPC headers and to date all of them have had the LPC holes filled with solder from the factory, some of the holes required using a pace micro because my Weller soldering iron with a 800 degree Tip "R" couldn't make enough heat to get the solder out because of the ground plane acting as a heatsink.

 

[Fantmx]

I was aiming the post to both people with a X3 and a X2.6. I don't own a 2.6 but the information should be at least close enough for someone with an IQ over 100 to bridge the gaps on their own.

Oh I see. So in the rest of your post you act like installing a mod chip is rocket science and then all of the sudden you are expecting people to figure stuff out on their own? Nice try. If you don't know the right information, don't post it. Simple as that.

You know, trying to get as much information out into the open, unlike people like you with "Please do not PM me for help, I will not answer." Yeah, way to give support to people in need.

Oh you got me, I haven't helped anyone on this board ever. Check Martin's sig, I bet he hasn't helped anyone either. The reason I have that is because there is no reason to PM me. If the post is made in the forum, chances are someone else will be able to get to it quicker than I will. Plus, it is just annoying.

Braid is useless unless you intend to use it for grounding straps or buss wire when doing a prototype board.

Only if you don't know what you're doing or how to use it.

I have moded 5 Xboxes to have LPC headers and to date all of them have had the LPC holes filled with solder from the factory, some of the holes required using a pace micro because my Weller soldering iron with a 800 degree Tip "R" couldn't make enough heat to get the solder out because of the ground plane acting as a heatsink.

Lol, you are so cool because you have multiple soldering irons. Funny, I have never needed a different soldering iron or different tip, and I have done well over 300 installs. Again, sounds to me like you simply don't know what you are doing. Maybe you should retake your "NASA soldering course". Unfortunatly it appears they teach terminology, but not skills at this mystery course. Most people end up damaging their boards by using a solder sucker, so that is why I say to avoid using one.

 

[dcflux]

This coversation is over.