KaosEngineer

I've never found a schematic/manual for any Xbox Power Supply Unit.

It has 2 512KB sized banks. You can flash any 256KB or 512KB modified Xbox BIOS to it. PrometheOS, SmartXXOS, XeniumOS, etc. are modchip control firmware which won't work. The latest BIOS is CerBIOS. It is a 256KB modifed Xbox BIOS. Edit: Which modified Xbox BIOS to flash to the modchip depends on which Xbox version you have. Not all modified Xbox BIOSes work on v1.6 consoles.

Purchase a wired 2-pin connector and ground both wires to activate the backup BIOS. You could use a couple of lengths of 26 to 30 AWG wire-wrap wire soldered to the back of the pins on the modchip to make the connection to ground.

Do you have the double red wire cable that connects from the modchip to the power+eject board?

The bottom PCB is what is needed to have the switchboard. There is no replacement for the plastic sticker that was placed on top of the original PCB with all of the labeling on it. Maybe you can have one custom made. The developer of the replacement chunky unit made it out of three thin stacked PCBs. Only one, the bottom PCB, has electronic components installed on it.

Measure the voltage level present on the standby 5Vdc lines when AC power is connected. Does it have 5Volts present?

The ATX to Xbox adapter above is only for v1.0-1.4 Xboxes, not v1.6s. (See: SICKmods : ATX PSU Converter > About (archive.org)) IIRC, sickmods.net never released a v1.6 compatible ATX to Xbox adapter - they did release an updated version 2 different than what is pictured above. However, it too is only for v1.0-1.4 Xboxes, not v1.6/1.6bs. (See: SICKmods : ATX PSU Converter 2 > Install It (archive.org)) Which Xbox version depends on the cable/connector you install on the Xbox side of the PCB. A 1x12 connector and cabling for v1.0/1.1 or a 2x10 connector and wiring for v1.2-1.4.

Download the xbmc.log and xbmc.log.old (or is it xbmc.old.log) files. Open them in a text editor to check for other error messages. Debugging will most likely need to be enabled then try installing the addon again to log more info to get a better understanding of what is causing the error.

If not already, check out the Steel Battalion Online subReddit: https://www.reddit.com/r/steelbattaliononline/ and Discord server for online multiplayer gaming: https://discord.gg/steelbattalion IIRC, they use XLink Kai to play with others on the Internet: https://www.teamxlink.co.uk/

Many people say this; however, the cap has leaked all over the motherboard. Please post/share a picture of the motherboard and/or area around the clock cap.

Plugged in. Be careful not to touch any exposed metal parts on the PSU.

PrometheOS is a replacement OS for the Xenium modchip. It is not a modified Xbox BIOS that runs games/homebrew apps. It is software to control the modchip and do maintenance operations on the console.

Are the 6.3Vdc, low-ESR, 105 degree Celcius rated electrolytic caps?

Clean that PCB. Edit1: Oh wait, it used to have a double-sided foam pad on it to hold it in place inside the console. Didn't it? I don't think the solder bridge between the 3rd and 4th pins on the bottom right- left-hand side of that PCB is to be there. Edit2: Reworded content. My other right - the left-hand side of the first picture.

There is no soldering of R7D1 to R7D2. The R at the front of the part's location designator stands for Resistor. R7D2 is a resistor. A pull-up resistor if I remember correctly. I believe it has a value of 10 Kilohms but I'll need to double check its value before you take that value as fact. I do believe it is needed for proper operation of the console. Edit: Found a post on reddit.com that says it is a 10 KOhm resistor. SMD resistor physical size: 0402. You need to add a solder bridge or some type of electrical connection between the two pads at location R7D3 on a v1.0/1.1 Xbox motherboard. The two pads where R7D1 is located are bridged on v1.2-1.4 motherboards and R7D10. See: TSOP Flashing Unlock points (biline.ca) Which version of motherboard do you have? Yes.

If the resistors or a capacitor shorts, more current will be drawn. Caps; however, I believe will open instead of short when they go bad.

On the controller card inside the DVD drive and on the hard drive.

This tells me that there's something pulling too much current on the IDE bus until after the hard drive has finished spinning up. There are most likely bad caps and or resistors on either the hard or DVD drive's controller boards.

Voltages for the hard drive usually have a +/- 5% or 10% tolerance. 5Vdc range: 5 + 0.25 = 5.25 Vdc maximum to 5 - 0.25V = 4.75 Vdc minimum 12Vdc range 12 + 0.6V = 12.6 Vdc maximum to 12 - 0.6V = 11.4Vdc minimum To me, both required voltages for operation of a 3.5" hard drive are a bit too low. You'd need to check the specs of the specific hard drive to see what the hard drive's power supply tolerances are.

I'll need to see if I have any v1.0 motherboards lying around to check if that same cap is missing on it or not. Not sure I'll get to it tonight.

Looks like C7D4 is missing. That piggyback rider probably goes there. And those two small resistors need to be put back where they go. Any other loose SMD components on the motherboard? ST M29F080T-90 Flash memory chip. The sticker on top covered all the manufacturer's labeling. ST M29F080A-90, Hyundai or Hynix HY29F080T-90 flash memory chips will work to replace the TSOP.

My old version of XBMC4Gamers was not completely installed and showed me the path. Upon installing the latest version, it did not show me the path that the old version did. I suggest running UnleashX. Move down the list of games to the one you are interested in finding where it is stored on the hard drive. Press the Start button to open the context sensitive menu. Move down to the Information... menu item then press (A). The path for the game will be displayed. New Topic in Software > Games or Software > Dashboards.

Press Y for Synopsis View and go to the Info screen. It may show you the path where the game is installed. I know it did on my older release of XBMC4Gamers; however, I did not have the artwork or synopsis info downloaded to my console. I'm installing the latest version, updated within this last week with updates even a day of two ago, to see if the same thing happens with it.

Please create a new topic post in the correct subforum.

That's the TSOP flash memory chip that holds the BIOS. You have a modchip installed so don't worry about replacing it. Unless you really feel you must replace it. Most likely a Hynix HY29F080T-90. However, take a close-up picture of it and post it in a reply. Edit: Corrected flash memory chip part number.