(Display Troubleshooting help)Cecha01 Liquid Cooled and ATX PSU

[TheConrad]

So I am working on doing a case swap mod and liquid cooling with a ATX power supply. I am trying to test to make sure stuff is working before proceeding. When I turn AT power supply on I get red standby when I turn on it comes on and stays on till its over heats (I currently don't have water pumps powered). I however don't have any display, tried HDMI and Component. When I turn on and try holding power button I never get the beep for display reset it just turns it back off after like 10-20 seconds.

I have the 12v power and group hooked up to CPU, The 5 pin hooked up to ground and always on power, then currently have the ATX Standby bridged to ground. I was having trouble with
Optocoupler https://www.amazon.com/gp/product/B01JG8EJVW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 these are one I had the O(dot) on top was wired to 10k resister(have no idea what one to use) then across from it top right I had ATX Standby wired. Then both bottoms grounded. By passed this for no because was getting beep for PSU failure error from ps3. But when I by pass it and it functions as normal I have no video out and can't get it to reset video settings with hold power button. Any Suggestions? I have been documenting whole process too to share when I am done. Know I've seen a lot of inquires on doing this.

https://www.flickr.com/photos/193116230@N03/

https://www.flickr.com/photos/193116230@N03/51210212077/in/dateposted-public/

 

[Yo_Yo]

Any Suggestions?

Awesome build! I was considering this once. I decided to go a different route though I'll be posting soon on as well! I'm just waiting on a final piece to install, but I'm almost done! I modded a DIA-001 with 3 pins instead of the 5, but it should be similar just 2 fewer connections. That is strange you have no video. If the board is powering on with no YLOD or smoke, I would think the RSX is good and the wiring is correct. things I would check from easiest to most difficult are:

Double-check you have the right pinout and connections hooked up (they look correct)
Check 12v, 5v, and 3.3v signals are good at the board when powered on (should be able to test 5v when in standby)
Check for shorts ( I see no heat shrink on connections)
Try connecting the pumps (might be an instant thermal protection causing it to shut down)
if nothing I would rig the original PSU back up
if nothing I would suspect a fried component if miswired

Sounds to me like a faulty video connection, or an issue if miswired or shorted at some point.

but I don't know much about the prior history: If the video was checked prior to modding, if a de-lid was attempted and caused an issue, if a short was ever present, if the voltage was correct when powering on.

For a clean install of an ATX power supply, I saw this thing before. It might be worth looking into to avoid issues with the right resistor value and Optocoupler . I'm not sure where to pick it up. Might check with the OP: https://www.psx-place.com/threads/pc-atx-power-supply-to-ps3-adapters.32713/

 

[TheConrad]

Awesome build! I was considering this once. I decided to go a different route though I'll be posting soon on as well!

Thanks, so I have most wires heat shrinked. So I didn't have the ps3 3.3v standby wired to anything I matched it to a 3.3v on Atx. Plugged in the old heating fan. Plugged the water pumps in. Tried connecting the other board that connect the wifi antenna. Am I missing grounding something on the mb?. Same thing still. I turn ATX on. Standby light comes on then I push it will turn green. If I hold it down I get no display reset beep. Holding for long enough just turns it back off. https://flic.kr/p/2m2ArGi I have it wired to 5pin on board 1&2 to atx constant 5v, 3@4 to atx ground, 5 to 3.3v atx. Also the standoffs and screws for MB are plastic don't know if that makes a difference.

 

[Yo_Yo]

I turn ATX on. Standby light comes on then I push it will turn green. If I hold it down I get no display reset beep. Holding for long enough just turns it back off. https://flic.kr/p/2m2ArGi I have it wired to 5pin on board 1&2 to atx constant 5v, 3@4 to atx ground, 5 to 3.3v atx. Also the standoffs and screws for MB are plastic don't know if that makes a difference.

that is interesting. I would think if you can get it to power on, and the light to stay green you should get video. As far as I know, the mobo shield grounding is a "protection" for a safe path back to the ground. I think it should run on plastic standoffs and isolated from the ground. Although I have mine grounded, it wouldn't hurt to have it grounded. At this point if you are still unsure the only 100% way to eliminate wiring as a possibility is to power up using the original PSU. If you still get no video then you know the issue is deeper in the board and not with wiring. I can't see anything wrong with your wiring from the pics. The fact that you can't get video on HDMI or component makes me a little concerned for the motherboard.

We can't conclude it's a faulty video port if both video outputs are not working. The board is also being powered by the correct voltages. From my limited perspective that only leaves something wrong in between power input and video output. I hope I'm wrong and the board is fine, but if it was me I would double-check that possibility before continuing to troubleshoot the power supply.

 

[TheConrad]

that is interesting. I would think if you can get it to power on, and the light to stay green you should get video. As far as I know, the mobo shield grounding is a "protection" for a safe path back to the ground. I think it should run on plastic standoffs and isolated from the ground. Although I have mine grounded, it wouldn't hurt to have it grounded. At this point if you are still unsure the only 100% way to eliminate wiring as a possibility is to power up using the original PSU. If you still get no video then you know the issue is deeper in the board and not with wiring. I can't see anything wrong with your wiring from the pics. The fact that you can't get video on HDMI or component makes me a little concerned for the motherboard.

We can't conclude it's a faulty video port if both video outputs are not working. The board is also being powered by the correct voltages. From my limited perspective that only leaves something wrong in between power input and video output. I hope I'm wrong and the board is fine, but if it was me I would double-check that possibility before continuing to troubleshoot the power supply.

Okay I will try to hook up orginal psu, bad thing is I soldered the 12v hook ups. And since I used my connector from psu to wire atx I'll have to order new on. I do know that MB worked when I put it in.

 

[TheConrad]

that is interesting. I would think if you can get it to power on, and the light to stay green you should get video. As far as I know, the mobo shield grounding is a "protection" for a safe path back to the ground. I think it should run on plastic standoffs and isolated from the ground. Although I have mine grounded, it wouldn't hurt to have it grounded. At this point if you are still unsure the only 100% way to eliminate wiring as a possibility is to power up using the original PSU. If you still get no video then you know the issue is deeper in the board and not with wiring. I can't see anything wrong with your wiring from the pics. The fact that you can't get video on HDMI or component makes me a little concerned for the motherboard.

We can't conclude it's a faulty video port if both video outputs are not working. The board is also being powered by the correct voltages. From my limited perspective that only leaves something wrong in between power input and video output. I hope I'm wrong and the board is fine, but if it was me I would double-check that possibility before continuing to troubleshoot the power supply.

So I finally received the new power supply cable. I hooked up the orginal power suppy. Goes to red stand by and goes green soon as I push button on. I still cannot get it to double beep like a video output reset. I left it on green for awhile to see if I get an overheat with my atx running liquid coolers and nothing. The cooler on chip closest to the hard drive is heating the cooler up so its getting juice. I also hear the hard drive spin up when on.

https://photos.app.goo.gl/Wsjgi5R5caLvxkKCA
https://photos.app.goo.gl/2Fi2pBY6RgMs3A9M6

I am having the worse time trying to get images shared here.