Emiougus Posted July 30, 2021 Report Share Posted July 30, 2021 My V1.1 Xbox is triple fragging, this happened after I tried swapping out the 40 Pin IDE cable for a 80Pin one. I've done a bit of debugging and found that the LPC header pins 3 and 5 aren't reporting correct voltages both reading below 1v What I think has happened is when I installed the 80 Pin IDE cable I without knowing freed up one of the solder joints on the switch that's on the XeniumICE which switches it into recovery mode(I have resoldered the broken joint and it didn't change anything and yes the switch is in the correct position, though I've tried both positions and still a frag) and somehow that's caused something to get fried but I'm not sure what exactly Uploaded some pictures of my LPC header soldering and D0 point for shits and giggles I have done continuity tests to the alternate points and they're all reading with continuity https://imgur.com/a/rBbAdlR Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 30, 2021 Report Share Posted July 30, 2021 I would suspect the problem is here. Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
KaosEngineer Posted July 31, 2021 Report Share Posted July 31, 2021 Pin 6 and 12 look like they could use a bit more solder to make a good connection to the LPC debug port pads. Edit: Add pin 2 to that list too. Quote Link to comment Share on other sites More sharing options...
KaosEngineer Posted July 31, 2021 Report Share Posted July 31, 2021 For reference, there's a link to download a Xenium ICE installation guide here. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 (edited) There's continuity between pin 5 and the via that's there, any other ideas? Edited July 31, 2021 by Emiougus Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 (edited) Precise voltage readings on the pins that aren't working are: Pin 1(LCLK): between 0.9 and 0.15v Pin 3(LFrame): Almost always has the same voltage reading as Pin 1 but they aren't shorted I checked Pin 5(LRst): between 0.18 and 0.20v All of these pins do have continuity with points I found online on other places on the board Edit: Should mention when testing the console was on(fragging) no av connector inserted and HDD and DVD drive aren't plugged in Edited July 31, 2021 by Emiougus Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 This is the readings it should be, also test again with the chip unplugged Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 5 minutes ago, Emiougus said: Should mention when testing the console was on(fragging) no av connector inserted and HDD and DVD drive aren't plugged in That's fine Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 So with modchip disconnected these are all the readings I get from the LPC header(grounded through the psu header that plugs into the main board) Pin 1: between 0.15 and 0.20v Pin 2: Nil Pin 3: 0.15v Pin 5: 0.18v Pin 6: 5.05v Pin 7: 3.2v Pin 8: 3.2v Pin 9: 3.2v Pin 10: 3.2v Pin 11: 3.2v Pin 12: Nil Pin 13: 3.2v Pin 14: 3.2v Pin 15: 3.2v Pin 16: 3.2v Figured I may as well add on the Main board pin header voltages aswell Blue wire: 3.2v White Wire: 3.2v Brown Wire: 3.2v Orange wire: 3.2v All red wires: 5v Yellow wire: 11.6v Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 14 minutes ago, Emiougus said: Figured I may as well add on the Main board pin header voltages aswell Blue wire: 3.2v White Wire: 3.2v Brown Wire: 3.2v Orange wire: 3.2v All red wires: 5v Yellow wire: 11.6v Those reading are good I would resolder pins 1, 2, 5, 5 by adding some flux paste and hold the iron on the joint (put the tip of the iron against the pin and on the pad on the board) for a little bit longer than you did before. I suspect you have a joint like the 1st or 2nd, 4th ones Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 Re-soldered all the lpc headers just to be safe, still fragging with or without XeniumICE. Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 Tries to Boot 3x then FRAG Usually due to a failed or improperly installed modchip or the IDE cable being plugged in upside down somewhere. Check modchip wiring and IDE cables. If you did not do any soldering, it could be a bad PSU. Is it fragging without the 2 drives connected. also check you have not bent a pin in the IDE connector on the board or the drives Have you tried with the old/original IDE cable and HDD? If you power on with the eject button with modchip is it still fragging? Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 Without the drives connected it still triple frags Checked the ide connector and there's no bent pins Powering on with eject button doesn't seem to make a difference to anything Original IDE cable doesn't seem to change anything either Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 I think you are looking for a solder splash somewhere on the board Is there and resistance readings between ground and pin 1,2,3,5 Pin 2 and 12 should have 0 ohms or very close to 0 Maybe post a high res pic of the whole board on a pic share and add the link here. Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 pins 2 and 12 are just shy of 0 ohms pins 1 and 3 are about 1200 ohms and pin 5 is roughly 200 I've been over this board with a fine toothed comb I'm 99% sure there's no solder splash Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 I'm 90% sure that either my modchip has died or the mcpx chip is damaged, do you know of any way to test them? I'm thinking about chucking the modchip into my other system to see if it works, if it does then testing the mcpx would be my next step but I'm unsure how to do that Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 Just tried out the chip in my other console and it works great, doesn't cause the console to frag or anything. So it's surely either gotta be damage to something to do with the HDD i/o or mcpx based on the pins(1,3,5) on the lpc not outputting correctly Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 On working 1.0 I get around 700k to ground on pins 1, 3 and 1.2k for pin 5 On a dead 1.0 i got around 700k pins 1, 3 and 1.7k pin 5 When I use a $20 meter I get open circuit for 1, 3 and 1.2k for pin 5 Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 Yeah so mine is a cheap multimeter, if I put it in 2000k mode I get open circuit on 1 and 3 and then I put it in 20k mode I get 1k on 5 Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted July 31, 2021 Report Share Posted July 31, 2021 As pin 5 is the reset line it either has a break in the trace and that's holding the voltage low. The most common place is where the arrow is pointing. Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted July 31, 2021 Author Report Share Posted July 31, 2021 oddly enough I'm now getting 1.7k ohms on pin 5 to ground but I traced it pretty far back, all the way to pin 53 of the video encoder and still get the same readings at all those points as I'm getting at the lpc header Quote Link to comment Share on other sites More sharing options...
SS_Dave Posted August 1, 2021 Report Share Posted August 1, 2021 13 hours ago, Emiougus said: oddly enough I'm now getting 1.7k ohms on pin 5 to ground but I traced it pretty far back, all the way to pin 53 of the video encoder and still get the same readings at all those points as I'm getting at the lpc header A quick look here is it connects to the IDE port (J8C1) Pin 1, The IC that is used for the ethernet port (U7B1), The video chip (U4B1), The reset transistor (Q7R1) There will also be a capacitor across the reset line and ground somewhere and probably a 10k pullup resistor to 3.3 volt. Cheers SS Dave Soft modding is like masturbating, It gets the job done but it's nothing like the real thing. Quote Link to comment Share on other sites More sharing options...
Emiougus Posted August 2, 2021 Author Report Share Posted August 2, 2021 would finding the reset pins on certain ICS and pulling them out of circuit then testing to see if I get 3.3 volt over the reset line be a good way of testing it? Quote Link to comment Share on other sites More sharing options...
Emiougus Posted August 2, 2021 Author Report Share Posted August 2, 2021 also, what's the pinout of the reset transistor? Quote Link to comment Share on other sites More sharing options...
Emiougus Posted August 2, 2021 Author Report Share Posted August 2, 2021 just plugged it in and now it's not fragging? tf Quote Link to comment Share on other sites More sharing options...
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