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PSU dead.. possible further damage? - Page 2

post #11 of 21
Right! IF the PC works with the 400W, then no components are damaged. If the old supply took out the circuit breaker, it's probably the primary side of the supply that died. Now, with you swapping supplies, you'll probably find that the 5VSB supply (the one that is always on) is rated less than what the one on your TX850. A lot of motherboards supply some of the USBs from that supply, which is why you can get some devices powered/charging even if the PC's off. It could be that your phone is drawing too much power, and tripping out the 5VSB on power protect. the only way to reset that would be to disconnect the mains for a few seconds, (15-30) then reconnect.

it could be you have other devices being powered off the 5VSB too, so what i would do, is with the machine off, try the charge cable in each USB port, and suss out which ones are on 5VSB, and which ones are on the ordinary 5V that switches on with the PC. I'd then connect high power draw devices, and ones that only need to be on with the PC to the 5V ports, and leave the 5VSB ports free, and just use them for charging. OR just charge the phone on a 5V port when the machine is on...the 5V has far more current capacity than the 5VSB (which is usually 1.5A-3A). I bet the symptoms happen mostly when your phone is near dead (thats when it draws the most current to charge the battery.)
post #12 of 21
Thread Starter 
Quote:
is the problem just with the pc not wanting to power up occasionally? and that's when you have to unplug it?

Yes, this is what happens. And if the PC does start, i haven't noticed any problems yet.
Quote:
Originally Posted by latelesley View Post

Right! IF the PC works with the 400W, then no components are damaged. If the old supply took out the circuit breaker, it's probably the primary side of the supply that died. Now, with you swapping supplies, you'll probably find that the 5VSB supply (the one that is always on) is rated less than what the one on your TX850. A lot of motherboards supply some of the USBs from that supply, which is why you can get some devices powered/charging even if the PC's off. It could be that your phone is drawing too much power, and tripping out the 5VSB on power protect. the only way to reset that would be to disconnect the mains for a few seconds, (15-30) then reconnect.

it could be you have other devices being powered off the 5VSB too, so what i would do, is with the machine off, try the charge cable in each USB port, and suss out which ones are on 5VSB, and which ones are on the ordinary 5V that switches on with the PC. I'd then connect high power draw devices, and ones that only need to be on with the PC to the 5V ports, and leave the 5VSB ports free, and just use them for charging. OR just charge the phone on a 5V port when the machine is on...the 5V has far more current capacity than the 5VSB (which is usually 1.5A-3A). I bet the symptoms happen mostly when your phone is near dead (thats when it draws the most current to charge the battery.)

When the PC is off my motherboard has an onboard light/switch that you can use to turn on the PC without using the case switch. That light stays on even when the PC is powered off, i don't know if it draws too much power. If what happens is what you say and the problem is the 5VSB, does this also happen when the PC is powered on? Because today my PC was powered on, i used the usb port (the same usb port i always use to charge it) to charge my phone (it was nearly dead), but PSU didn't shutdown. It only happens if it is powered off.

TX850 has:
+5VSB, 3A and 15W
+5V, 30A which is combined with the +3,3V for 180W

400W has:
+5VSB, 2,5A and 12,5W
+5V, 20A which is combined with the +3,3V for 130W

Does that small 0,5A difference be the cause of this issue?
Edited by zzalk - 3/7/14 at 9:48am
post #13 of 21
Quote:
Originally Posted by zzalk View Post

Yes, this is what happens. And if the PC does start, i haven't noticed any problems yet.
When the PC is off my motherboard has an onboard light/switch that you can use to turn on the PC without using the case switch. That light stays on even when the PC is powered off, i don't know if it draws too much power. If what happens is what you say and the problem is the 5VSB, does this also happen when the PC is powered on? Because today my PC was powered on, i used the usb port (the same usb port i always use to charge it) to charge my phone (it was nearly dead), but PSU didn't shutdown. It only happens if it is powered off.

TX850 has:
+5VSB, 3A and 15W
+5V, 30A which is combined with the +3,3V for 180W

400W has:
+5VSB, 2,5A and 12,5W
+5V, 20A which is combined with the +3,3V for 130W

Does that small 0,5A difference be the cause of this issue?

.5A for charging usb devices could make a difference, and most likely will. What type of phone? and i believe the power button being lit when powered off is normal. My asus maximus does the same thing.
post #14 of 21
Thread Starter 
phone is a samsung wave s8500.
yes, the power button light is like that since i bought the motherboard.
post #15 of 21
Quote:
Originally Posted by zzalk View Post

phone is a samsung wave s8500.
yes, the power button light is like that since i bought the motherboard.

Not sure if the .5 A would make much difference for that phone. only times i have seen a usb charging issue with a pc is trying to charge an ipad. normally the ipad said it did not have sufficient power to charge but i installed a charger app for the asrock motherboard and then it charged fine.
unfortunately i cant find a utility that is for usb charging for your board.
post #16 of 21
Thread Starter 
I know of an utility, gigabyte has one here http://www.gigabyte.com/MicroSite/185/on-off-charge.htm but i haven't installed it, although i do not use that specific red usb port that gigabyte shows. I use a usb port on my case. Will this utility show me anything useful?
post #17 of 21
Quote:
Originally Posted by zzalk View Post

I know of an utility, gigabyte has one here http://www.gigabyte.com/MicroSite/185/on-off-charge.htm but i haven't installed it, although i do not use that specific red usb port that gigabyte shows. I use a usb port on my case. Will this utility show me anything useful?

I would use the utility, often times it provides more power to the specified port for charging devices. the ports on your case that are connected to the usb headers are only meant for typical data transfers from usb pen drives or hard drives. What is it going to hurt to install it and try it out? I would
post #18 of 21
The onboard light (probably LED) will draw in the region of 25mA or 0.025A. The half amp could make a difference cos at 5V the current can ramp up quickly, because in wattage terms, its not a lot. You are talking a 2.5W difference to put it into perspective, which isn't a lot of power. As for it only happening when it's off, it could be the power is supported by the ordinary 5V supply when the machine is on.
post #19 of 21
Thread Starter 
Just an update on my issue, in case someone has similar problems.
I stopped charging my phone while PC is off and haven't noticed that problem yet.
I think latelesley was right. Mobile phone was probably triggering power protect.

Thanks everyone for their help.
post #20 of 21
Glad to hear it was resolved for you. Do you use a usb wall charger now?
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