PG4791 Posted November 12, 2020 Share Posted November 12, 2020 Today I replaced a EVGA PSU with a RM 850 PSU in preparation for a 3080, everything went smoothly, nice install, on powering up I heard the PSU click inside but the system didnt boot up. I repowered the system after checking cables again and I heard the LEDS fizzling inside the pump of my new Corsair iCUE H100i RGB PRO XT ! I feared the worst and removed the 850w and replaced the 750x EVGA, the system booted up fine, except now only a red LED can be seen on the pump. WTF Happened? And where do I go from here?? Link to comment Share on other sites More sharing options...
LeDoyen Posted November 12, 2020 Share Posted November 12, 2020 I don't see an obvious cause for it, except if you reused the EVGA cables on the RM. The pinouts are different, soooo that would have fried stuff since it would connect voltages and grounds at the wrong places Link to comment Share on other sites More sharing options...
Corsair Employee Corsair Notepad Posted November 12, 2020 Corsair Employee Share Posted November 12, 2020 Sounds like you may have used the EVGA cables with the RM850 which would cause this issue. Link to comment Share on other sites More sharing options...
Corsair Employee jonnyguru Posted November 12, 2020 Corsair Employee Share Posted November 12, 2020 WTF Happened? You didn't try using any of the EVGA cables on the Corsair PSU, did you? Link to comment Share on other sites More sharing options...
PG4791 Posted November 13, 2020 Author Share Posted November 13, 2020 Now that you come to mention it, Im not 100% sure, its possible I got one mixed up during the take down? Link to comment Share on other sites More sharing options...
LeDoyen Posted November 13, 2020 Share Posted November 13, 2020 i believe all corsair cables should state on the PSU end connector what type they are like "type 3", or "type 4" (look in your Corsair bag of cables) If it's not written, it's probably an EVGA cable. Maybe start by checking the one powering your AIO since this one let the magic smoke escape, but check them all really. Link to comment Share on other sites More sharing options...
Corsair Employee jonnyguru Posted November 13, 2020 Corsair Employee Share Posted November 13, 2020 Now that you come to mention it, Im not 100% sure, its possible I got one mixed up during the take down? Where they plug into the PSU may be physically the same, but the pinout will be different. The EVGA connector is: Top row: +12V, N/C, GND Bottom row: +5V, GND, +3.3V Corsair is: Top row: GND, +5V, GND Bottom row: +3.3V, +5V, +12V So you can see how switching them can cause a lot of damage. And as LeDoyen pointed out; the connectors will be marked differently where they plug into the PSU. Link to comment Share on other sites More sharing options...
PG4791 Posted November 15, 2020 Author Share Posted November 15, 2020 Where they plug into the PSU may be physically the same, but the pinout will be different. The EVGA connector is: Top row: +12V, N/C, GND Bottom row: +5V, GND, +3.3V Corsair is: Top row: GND, +5V, GND Bottom row: +3.3V, +5V, +12V So you can see how switching them can cause a lot of damage. And as LeDoyen pointed out; the connectors will be marked differently where they plug into the PSU. Many Thanks for your help. Link to comment Share on other sites More sharing options...
Pocah Posted November 15, 2020 Share Posted November 15, 2020 Where they plug into the PSU may be physically the same, but the pinout will be different. The EVGA connector is: Top row: +12V, N/C, GND Bottom row: +5V, GND, +3.3V Corsair is: Top row: GND, +5V, GND Bottom row: +3.3V, +5V, +12V So you can see how switching them can cause a lot of damage. And as LeDoyen pointed out; the connectors will be marked differently where they plug into the PSU. Yup! That would do it. Link to comment Share on other sites More sharing options...
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