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OG Xbox Forums => Modchip Forums => Team Omega Chips (DuoX) => Topic started by: hogfan on June 11, 2005, 11:53:00 PM

Title: Help Troubleshooting Duox2
Post by: hogfan on June 11, 2005, 11:53:00 PM
Pinheader is soldered into the LPC and the chip is plugged in.  BT wire is is connected to the specified point on the Eject button assembly, and solder is not touching the metal shielding.  The D0 wire is connected to the top D0 point.  The Xbox boots up fine with the modchip not connected at all.  When the chip is connected and I power on with the power button it boots to MS bios.  However, if I boot with the "Eject" button, I get constant flashing green lights and no video.  I'm not sure how to troubleshoot this problem.  The Xbox is a version 1.2 and I'm certain I have the correct D0 point.  What could be causing it not to boot from the chip, and why the green flashing when I try to boot with the eject button (bypass the modchip).  Any suggestions are appreciated.  I've dealt with worse before, especially Spiderchip.  DuoX2 was easy to install, but I can get it to boot.


Edit:  Also, sometimes when I boot with the power button I also get no video or sound.  Sometimes it works, sometimes it doesn't!  blink.gif
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 12, 2005, 04:26:00 AM

I remember your name but i can't remember from what ... Spiderchip stuff i think ... anyway you really need to check out my site and follow the troubleshooting info.

http://members.lycos...2_Diagnose.html

Take your D0 wire off and solder it to the alternate D0 on the bottomside of the mobo.

HackDaBox !

Title: Help Troubleshooting Duox2
Post by: hippo on June 12, 2005, 04:58:00 AM
Blank screen can mean you are on the wrong bios bank. Also it can mean you don't have the stock AV cables on a cromwell type flash bios like you can't use HD cables for flashing.

Also green flashing LED is like what happens when you eject an unmodded xbox the LED blinks green to warn nearby ants that the tray is opening and to get the hell out of the way. Also try a long press to the power on button to make sure it registers the long press and not a quick flick because you can access all modes from the power button. Also if you customized the LED ring you don't get a true error code, if you were to remove the red side of the LED and it would just flash green not green and red.

Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 12, 2005, 05:06:00 AM

Good point hippo, Make sure you are using the standard xbox video cable with yellow , red and white. Not the S-Video connection !

Do you have the BLUE or WHITE DuoX2 ?

HackDaBox !

Title: Help Troubleshooting Duox2
Post by: hogfan on June 12, 2005, 09:36:00 AM
It's the blue version of the DuoX2.  The other thing is that when I boot with the eject button, the DVD tray doesn't eject, just the green flashing.  I'll try that long press on the power button.  And yes, I originally tried to solder the d0 wire to the point on the bottom side of the board, but it wouldn't stay stuck, and the small amount of solder on the pad burned off.  Had to fix with a silver trace-writer pen.  The top d0 point is clean and I've never had a problem with the d0 point before.
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 12, 2005, 09:50:00 AM
OMG - ok leave that D0 alone smile.gif

But solder the other end of d0 to the metal ring around the screw nearest the LPC area. So mobo D0 to ground. And no connection to D0 on the chip. Then solder a small wire from BT on the chip to G on the chip like in this diagram...

http://members.lycos...dabox/bt2g.html

Now try and boot if it frags your LPC points ( pinheader ) is not soldered correctly or the BIOS is corrupt or you have a bad chip.

PS these chips are almost never faulty and almost never shipped with a bad bios smile.gif

If it now boots fine then your original problem was with the soldering of D0 on the chip or with the BT wire.

If your happy it now works then you can remove the link from BT to Ground and then put a wire from BT to the point behind the reset switch. Then remove the D0 to ground and put it back on to the D0 pad on the chip.

HackDaBox !
Title: Help Troubleshooting Duox2
Post by: novakpower on June 12, 2005, 09:59:00 AM
Also check the cloned Duo threads, I had a clone duo x2 that was doing a similar thing.  Blank screens, mainly weird beep type frags.   The quality of the clone was subpar.
Title: Help Troubleshooting Duox2
Post by: hogfan on June 12, 2005, 10:06:00 AM
Thanks for the info.  One question though.  Say I get it working with the d0 grounded to the metal ring and BT soldered to G.  With this setup, there is no way (other than extending the bios bank selector switch) to bypass the chip and boot to the original bios, correct?  In order for the BT wire to be soldered to the eject assembly point, the d0 must be connected to the chip also, correct?  Thanks for all the info.  I chose DuoX2 this time because they are really cheap, and seem to be pretty reputable chips around here.  Fitting the chip was so much easier than the spiderchip! smile.gif
Title: Help Troubleshooting Duox2
Post by: hogfan on June 12, 2005, 10:08:00 AM
This one is not a clone.  I bought it from one of the Mods here (Appleguru), so I know it's a real DuoX2.
Title: Help Troubleshooting Duox2
Post by: hogfan on June 12, 2005, 10:51:00 AM
Well, it must be the LPC because I grounded the d0 to the ring around the screw and soldered to point G on the chip to make the chip always on.  Now I get FRAG.  The Pinheader is soldered in, but the lpc holes are not completely filled with solder.  I can't get the the damn stuff to suck in. It just wants to stay stuck to the iron.  I tried some of my soldering paste that has flux in it, but it just makes a mess.  Sound like the LPC to you guys since it FRAGs now?  Removed the chip and un-grounded d0 MS bios boots fine.
Title: Help Troubleshooting Duox2
Post by: Chancer on June 12, 2005, 12:45:00 PM
QUOTE
It just wants to stay stuck to the iron.

It sounds like your soldering iron is not powerful enough. This can be a common occurence with a lower power iron. the solder does not melt correctly stopping it from flowing easily.
Try a more powerful iron , practice with it first till you are confident with it.
Title: Help Troubleshooting Duox2
Post by: hippo on June 12, 2005, 01:53:00 PM
Possibly you are experiencing what is known as 'stubborn' D0 in that the CPLD cant actually sink hard enough to pull it to ground. This was the purpose of the Aladdin X pad is some machines (about 3%) are exceptionaly hard to sink to ground.

Other than that Blank screen can mean LPC comm errors and alot of other things that don't help nail down a poor install or a poor chip.

90% of all electronic defects trace back to poor soldering, either on the chip or on your install.
Title: Help Troubleshooting Duox2
Post by: hogfan on June 12, 2005, 04:12:00 PM
This was my first Pin header install, and I didn't expect this many problems.  Just plug it in and go.  It is hard to solder the male pin header in and completely fill the holes.  As hippo said maybe "stuborn" d0, I'm thinking it's the LPC because when I ground the d0 I get Frag.  If I unplug the chip from the pin header and unground the d0, it boots to Ms bios fine. If I can't get this resolved, I'll just use UXE and Flash TSOP with X24981.06.  The whole point of using the DuoX2 was to be able to disable the mod.
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 12, 2005, 09:01:00 PM

I don't reckon it's a D0 issue. What soldering iron are you using 15W or 25W ? 25W works ok for me on pinheaders. Like chancer said just practise. Some pics would help alot. Also make sure the female pinheader is also soldered ok.

Don't worry about not being able to disable the chip for xbox live as the setup i have described is only a temp thing just to test the chip and soldering , later once all is working ok we will move the BT back to the proper spot and loose the link wire so the chip has full enable and disable status. But at the moment you are at step 3 so don't worry about step 47 ! OK.

HackDaBox!
Title: Help Troubleshooting Duox2
Post by: hogfan on June 12, 2005, 10:52:00 PM
I worked even more on the Pinheader in the LPC and I can't move it around at all and the connections look to be good.  As I said, the d0 is grounding fine.  I thought about desoldering the male Pinheader from the LPC, but it's much harder to remove than it is to solder in.  I may have to get some desoldering braid.  I just don't get it.  I bought the  chip from appleguru and  paid an extra $2 to have him solder the female pinheader to the chip.  It looks nice and clean.  Damn the LPC! smile.gif  This is a 1.2 board, and I've never had LPC problems before on early version boards (but then again this is my first pinheader install. Ironically, this is supposed to be the easiest installation.  Any ideas or suggestions on desoldering the pinheader from the LPC?  I bridged my points and was going to TSOP it and the I remembered about the damn HDD having to be locked.  That was AFTER I opened MY xbox and formatted the new HDD and put UXE on it.
Title: Help Troubleshooting Duox2
Post by: Chancer on June 13, 2005, 02:34:00 AM
QUOTE
Any ideas or suggestions on desoldering the pinheader from the LPC?

You mean apart from the ones you have not responded about?
get a better soldering iron!!
Soldering in a pinheader is a very easy job with only minimal practice. If its hard work the iron is not up to the job.
Be careful because removing it requires a hotter iron than installing it and I feel you may rip traces
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 13, 2005, 09:36:00 AM

A desoldering station makes this a breeze. Or using solder wick / braid or even a solder sucker can be used but if you have no experience then i suggest you send the motherboard and chip to someone to fit it for you.

HackDaBox !

Title: Help Troubleshooting Duox2
Post by: hogfan on June 13, 2005, 10:50:00 AM
I think my iron is 15 watt.  I'll probably just get some de-soldering braid and remove it.    When I soldered it in, the solder was sticking fine to the pins, but didn't want to suck into the LPC holes.  I applied a bit of solder paste (which contains flux) around the base of the pins, but it still wouldn't suck into the holes.  I can't go out and spend $15 on a new iron that I will probably use twice.  My 15 watt iron has worked fine on all of my other installs.
Title: Help Troubleshooting Duox2
Post by: Chancer on June 13, 2005, 11:07:00 AM
QUOTE
I think my iron is 15 watt. I'll probably just get some de-soldering braid and remove it. When I soldered it in, the solder was sticking fine to the pins, but didn't want to suck into the LPC holes

Its your xbox. I am quite certain by what you describe here that you will do some damage.
QUOTE
I can't go out and spend $15 on a new iron that I will probably use twice. My 15 watt iron has worked fine on all of my other installs.

All of your other installs?? Hmmm huh.gif
Title: Help Troubleshooting Duox2
Post by: hogfan on June 13, 2005, 11:23:00 AM
Yes, I have done 10+ installs, but never a pinheader type.  All of my boxes have worked fine.  My question is, if I have the pinheader soldered in where I can't pull it out and no traces or LPC points are being bridged, then are the pins not making contact with the LPC points?  I mean I can't move the pinheader at all.
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 13, 2005, 03:49:00 PM
Hmmm thats not a true test. Once a couple of pins are soldered ... then the pinheader will feel strong and will not move around at all but some of the pins will still not be making a good contact. Do you have a multimeter ? maybe test your connections that way! , if not they are really cheap nowadays for a basic meter from rat shack !

HackDaBox !
Title: Help Troubleshooting Duox2
Post by: hogfan on June 13, 2005, 04:39:00 PM
Thanks for all of the help Hacksdabox.  I worked on the pinheader a bit more, and am sure that each pin is soldered in and making good contact.  Another concern I've had the entire time is that the chip does not light up When I try to boot.  Does the DuoX2 have an LED on it?  My X.B.I.T. has a green light, and the spiders have a blue one.  Should the duox2 be lighting up when I try to boot....because it is not.
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 13, 2005, 06:17:00 PM

⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂
⌂ HackDaBox DuoX2 Troubleshooter! ⌂
⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂


Solder a link wire from BT to G on the DuoX2 like in this picture ...

http://members.lycos...dabox/bt2g.html

You should have D0 from motherboard to D0 on DuoX2

You should NOT have a wire to BT on motherboard ( behind eject button )

Now press power to boot the xbox and the RED led should flash on and off continuously. If your RED light is not flashing resolder your D0 point and double check it's the right via you have soldered to. Use a multimeter to check there is power running throw the LPC. With the xbox on and the dvd-rom removed set your multimeter to volts DC and place the BLACK probe on pin 2 and the RED probe on pin 9, It should read 3.3V. Now move the RED probe to pin 6, It should read 5V. If you don't get power resolder the connections after you turn the xbox off. Also have a look for broken traces around the LPC points.

If the RED led flashes but the MS BIOS boots then the D0 point is the problem and you will need to resolder it. Try using the bottom side D0 as it's easier. Try booting my HackDaBox Reflash Cd as sometimes people think the chip isn't working becuase the MS dashboard boots but this is normal, it won't look different unless you have installed a replacement dashboard.

Finally if your DuoX2 chip now behaves like it should and boots up fine into the hacked bios and flashed a RED led then your BT wire was your problem and you can now remove the link from BT to G and now fit a wire from the DuoX2 BT to the BT on the motherboard ( behind the eject button ) or the alternate BT point on the bottom side of the motherboard.

HackDaBox!
Title: Help Troubleshooting Duox2
Post by: HackDaBox on June 13, 2005, 06:43:00 PM
⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂
⌂ HackDaBox DuoX2 Troubleshooter! ⌂
⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂⌂

Here is a picture of the LPC pinouts to help with the multimeter info ...

http://members.lycos...kdabox/lpc.html

HackDaBox !