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HX1200 problems booting


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Hello!

 

I have problems with my HX1200 booting into Windows. The motherboard Asrock Taichi x399 shows error code 62.

 

I got this unit from warranty. The first one that got replaced was having loud bang noises when turned on, but atleast it booted and worked stable.

 

The PSU serial number starts with: 203871, so maybe this is known problem: https://forum.corsair.com/forums/showthread.php?t=201807

 

But then again, why Corsair would send units with known defects to customers?

 

Is there anything in PSU I could check? I am getting desperate, it is expensive to ship packages and I dont want to wait another 2 months. :(:

 

Thanks, Mikko

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But then again, why Corsair would send units with known defects to customers?

 

You got the PSU directly from Corsair?

 

Corsair did not send "known bad units" to customers. Corsair actually recalled affected units from warehouses once the issue was found (about a month after manufacturer).

 

The problem was not found immediately (i.e. at the factory) because it varies based on temperature. The colder the operating temperature, the less likely the HX1200 would start.

 

If a RETAILER (e.g. Amazon, Alternate, Newegg, etc.) already had the product in stock before Corsair recalled that lot code, they would still send it to the customer. Corsair does not control retailer's inventory. They only control their own inventory.

 

 

I am in the same boat with you. They sent me a refurbished unit and that one is dead. Currently on hold trying to get this resolved, but it has not been a good experience.

 

That's surprising that it's dead. Refurbs are all tested thoroughly before shipped to customers. Did the refurb have the same lot code as the recalled product?

Edited by jonnyguru
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That's surprising that it's dead. Refurbs are all tested thoroughly before shipped to customers. Did the refurb have the same lot code as the recalled product?

 

I don't see a lot code on the refurb. The only sticker is the one on the top of the unit and I don't see a lot code on there. I know I plugged it all in, flipped the switch, it then made a spark sound, and none of the lights on my motherboard turned on. I pressed the power button and nothing happened. I took it apart and put the unit with the cold boot issues back in and it went back to the multiple failed boots with eventually turning on when it warmed up. If you know where the lot code is or would like me to send you a picture of the sticker on the unit I can do that.

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I don't see a lot code on the refurb. The only sticker is the one on the top of the unit and I don't see a lot code on there. I know I plugged it all in, flipped the switch, it then made a spark sound, and none of the lights on my motherboard turned on. I pressed the power button and nothing happened. I took it apart and put the unit with the cold boot issues back in and it went back to the multiple failed boots with eventually turning on when it warmed up. If you know where the lot code is or would like me to send you a picture of the sticker on the unit I can do that.

 

The lot code is the first 8 digits of the serial number, which is on the spec label.

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S/N: 18067131

 

2018

06

7131

 

Seems like an older unit so not part of the recall, but doesn't explain why it's dead.

 

No. That's actually MUCH older (which makes sense as it had to go back to Corsair for the refurb process).

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I made some more testing and I actually made some progress.

 

IF the GPU PCIe cable was in position 3 or 5 (as marked in the picture) the system booted to Windows. If position was 4 or 6, no luck. Also booting with cable in position 3 or 5 was not successful every time, it worked only every 2-3 time or something.

 

I also tried booting with dual GPU with PCIe cables in both positions (3 and 5). Doesnt work.

 

hx1200pcie.jpg

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I made some more testing and I actually made some progress.

 

IF the GPU PCIe cable was in position 3 or 5 (as marked in the picture) the system booted to Windows. If position was 4 or 6, no luck. Also booting with cable in position 3 or 5 was not successful every time, it worked only every 2-3 time or something.

 

I also tried booting with dual GPU with PCIe cables in both positions (3 and 5). Doesnt work.

 

I think it's coincidental. Since you're making boot attempts over and over, eventually it's going to work.

 

The problem, that invoked the recall, was an LT431 used in the power good signal circuit whose value would change based on it's temperature. The colder it was, the lower the output voltage, which prevented the PSU from starting.

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I think it's coincidental. Since you're making boot attempts over and over, eventually it's going to work.

 

The problem, that invoked the recall, was an LT431 used in the power good signal circuit whose value would change based on it's temperature. The colder it was, the lower the output voltage, which prevented the PSU from starting.

 

Ok, it is probably coincidental. It now works also in position 6. I also tried to connect motherboard power cables to sockets 3-6 but no luck.

 

The PSU starts, so its not the LT431 problem then.

 

Thank you for your help.

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