Hello. Early this month I accidentally killed an old PSU when plugging in with it flipped on and hearing a pop. I took my PC for diagnosis and learned I also blew capacitors on mobo. I had mobo repaired, purchased rather overkill rm750x psu to replace.
When the PC was returned to me I assured all was working well, but they did forget to install updates/drivers as well as clean CPU heat sync, which was part of the repair job. Most notably, the PC had a strong, metallic/chemical fried sort of smell. I'm reluctant to use fried as a describing word but at that time, that's what came to mind.
This scent permeated the entire case, could easily smell it with the PC off from above the top fan or with the side panel off with my nose 1 foot away. I ignored this at the time because at that moment I had a high level of trust with the repair shop, and assumed they used a chemical solvent for their cleaning attempt (they used no solvents/chemicals). I assume in good faith they didn't notice anything of concern as nothing was said to me about it.
At that time I see HWMonitor showed AUXTIN spike from 44-67 C to 87-96C a few times before I shut down the PC out of concern. One of the spikes I applied external fan and it cooled down quickly in response.
After returning PC for faulty behaviour (hang ups/freezing - apparently because lack of updates/drivers). It was given back and still retained that smell, albeit less. In about 16 hours of use since then I suffered 2 instances of system freezing up shortly after start up requiring manually restart with power button. Following the second the system re-installed the Windows 10 update I was told was installed. I haven't noticed anything like that since but have only given it another ~16 hours of use since.
I tracked down the smell to the RM750x. It does seem to be reducing with time, I would no longer use cooked/fried to describe it. More of a metallic/chemical. It no longer permeates the case and is only noticeble ~4 inches away from the back of the psu. I would say when first given back the odor was 9/10 strength and could be smelled anywhere from the PC, and at present maybe 2.5/10 and only smelled from the back of the PSU.
At present, after re-updating at home post lock-up, AUXTIN is much more consistent at 43-46C but I've still seen it spike to 65-71 twice now. I was prompted to check once when leaving PC and returning to see chrome window non responsive alert. Top of the psu is room temp and the back near cable port is warm to the touch and emits warm air.
In regards to the smell I contacted Corsair, the Repair shop, and the Corsair seller in my city.
It was Corsairs opinion the smell is uncommon, but can just be 'new part smell' and should fade almost completely with time, I have a ticket for continued contact if the smell remains or worsens.
It was the Repair shops opinion the smell is probably new part smell, but could be dangerous and to contact seller.
The repair shop again didn't mention anything of smelling it themselves.
It was the sellers opinion any scent that can be smelled within the case and not just the psu is highly unusual, and a concern.
In regards to the temp spikes I contacted Corsair and the Repair shop.
It was the Repair shops opinion the temp spikes were because of the stress test they ran hours earlier, before powering down and returning to me (found this suspect)
It was Corsairs opinion the AUXTIN reading could probably be ignored, the RM750x does not have a direct temp sensor, many people have high AUXTIN temps and are fine, even if mine seemingly responds to external cooling. Corsair also found the Repair shops explanation of the spikes dubious.
While I trust the owner of the shop I've learned the techs can be forgetful at best.
From what I can see, physically, there is nothing of concern on the PSU or it's cables. However, due to poor cleaning job the power cable plugged into mobo was surrounded by dust, I did try to unplug to check underneath but it was on extremely tight and I've never connected PSU cables myself so relented in fear of breaking it.
I'm curious if anyone could provide any input from experience with AUXTIN spikes or PSU smell from this or other power supplies?
I feel better that the smell is reducing, but given the series of events I want to be as informed as possible as we know if something is wrong with the PSU, it could be a very expensive or dangerous failure.
Thanks for reading
When the PC was returned to me I assured all was working well, but they did forget to install updates/drivers as well as clean CPU heat sync, which was part of the repair job. Most notably, the PC had a strong, metallic/chemical fried sort of smell. I'm reluctant to use fried as a describing word but at that time, that's what came to mind.
This scent permeated the entire case, could easily smell it with the PC off from above the top fan or with the side panel off with my nose 1 foot away. I ignored this at the time because at that moment I had a high level of trust with the repair shop, and assumed they used a chemical solvent for their cleaning attempt (they used no solvents/chemicals). I assume in good faith they didn't notice anything of concern as nothing was said to me about it.
At that time I see HWMonitor showed AUXTIN spike from 44-67 C to 87-96C a few times before I shut down the PC out of concern. One of the spikes I applied external fan and it cooled down quickly in response.
After returning PC for faulty behaviour (hang ups/freezing - apparently because lack of updates/drivers). It was given back and still retained that smell, albeit less. In about 16 hours of use since then I suffered 2 instances of system freezing up shortly after start up requiring manually restart with power button. Following the second the system re-installed the Windows 10 update I was told was installed. I haven't noticed anything like that since but have only given it another ~16 hours of use since.
I tracked down the smell to the RM750x. It does seem to be reducing with time, I would no longer use cooked/fried to describe it. More of a metallic/chemical. It no longer permeates the case and is only noticeble ~4 inches away from the back of the psu. I would say when first given back the odor was 9/10 strength and could be smelled anywhere from the PC, and at present maybe 2.5/10 and only smelled from the back of the PSU.
At present, after re-updating at home post lock-up, AUXTIN is much more consistent at 43-46C but I've still seen it spike to 65-71 twice now. I was prompted to check once when leaving PC and returning to see chrome window non responsive alert. Top of the psu is room temp and the back near cable port is warm to the touch and emits warm air.
In regards to the smell I contacted Corsair, the Repair shop, and the Corsair seller in my city.
It was Corsairs opinion the smell is uncommon, but can just be 'new part smell' and should fade almost completely with time, I have a ticket for continued contact if the smell remains or worsens.
It was the Repair shops opinion the smell is probably new part smell, but could be dangerous and to contact seller.
The repair shop again didn't mention anything of smelling it themselves.
It was the sellers opinion any scent that can be smelled within the case and not just the psu is highly unusual, and a concern.
In regards to the temp spikes I contacted Corsair and the Repair shop.
It was the Repair shops opinion the temp spikes were because of the stress test they ran hours earlier, before powering down and returning to me (found this suspect)
It was Corsairs opinion the AUXTIN reading could probably be ignored, the RM750x does not have a direct temp sensor, many people have high AUXTIN temps and are fine, even if mine seemingly responds to external cooling. Corsair also found the Repair shops explanation of the spikes dubious.
While I trust the owner of the shop I've learned the techs can be forgetful at best.
From what I can see, physically, there is nothing of concern on the PSU or it's cables. However, due to poor cleaning job the power cable plugged into mobo was surrounded by dust, I did try to unplug to check underneath but it was on extremely tight and I've never connected PSU cables myself so relented in fear of breaking it.
I'm curious if anyone could provide any input from experience with AUXTIN spikes or PSU smell from this or other power supplies?
I feel better that the smell is reducing, but given the series of events I want to be as informed as possible as we know if something is wrong with the PSU, it could be a very expensive or dangerous failure.
Thanks for reading
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