Asus Crosshair
Hello all i have a crosshair, older board that is just socket am2. it has a very weird problem which is it will not power on at all. there are leds on the board that will illuminate and the lcd screen on the back will light up too. but the power supply isn't coming on and all the fans remain dead. the board has no physical damage with most of the caps being polys. a few tk caps but none are bloated and most are on the bottom of the board. iv also tried two different power supplys that i know work fine. Its looks extremely clean so im confused to why it wont power on at all. any ideas would help me out and ill try to get some pictures up soon. Thank you all!
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Re: Asus Crosshair
ASUS boards often just die for no obvious reason. It's called the ASDS (ASUS Sudden Death Syndrome). Could also be the chipset if it's Nvidia (since all Socket AM2 nVidia chipsets had known defects with their soldering and substrate material).Last edited by c_hegge; 02-22-2014, 05:18 AM.I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro -
Re: Asus Crosshair
i was thinking about shorting the green and black wire on the powersupply to see if it posts or anything. should i give that a shot?Comment
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Re: Asus Crosshair
I just had an Asus P5VD2-MX SE that experienced this. Had the thing sitting around as a spare until I needed it. At first it powered on great, but then froze in the BIOS and would not post again despite all my efforts. Only abnormal thing I can think of was that the VRM low FETs (AP85T03GH) read short drain to source. Out of circuit it wasn't though but the empty drain and source pads still read short on the motherboard. Maybe this is supposed to happen when there is a CPU inserted, or maybe there's a short somewhere else on the board... Could be the VIA P4M890 failing?"We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."
-Leonid Brezhnev (On the Yom Kippur War)Comment
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Re: Asus Crosshair
Yes, with the CPU in there, the lower MOSFETs will all appear shorted. This is normal though. NB chipset VRM is in the same boat usually. If the board powers, there is no short. If there really was a short and the PSU didn't cut out, you'd see it, alright - probably lots of smoke and maybe even a hole in your board.Comment
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Re: Asus Crosshair
Thanks. The board was scavenged earlier today so I'll guess I'll never know. Cheap old little board that maxed out at 2GB, no big loss. Still, I'd like to know for sure what causes "Asus sudden death syndrome"... Somewhere in China, some sadistic Asus sweatshop engineer is wringing his hands with delight."We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."
-Leonid Brezhnev (On the Yom Kippur War)Comment
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Re: Asus Crosshair
So iv come back to this board to see if theres any hope for it. it will not power on even when the power supply is shorted to be turned on. with the power supply off and i can see the board has power it appears that its either the little audio chip or ehternet chip that is built on the board starts to get fairly hot for some reason. i dont know why this would happen but i have little hope for this board now.Comment
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Re: Asus Crosshair
^
I've had that happen before - it's often caused by the Ethernet chip getting taken out by a lightning hit through an ADSL router. The Gigabyte GA-Z77M-D3H-MVP motherboard in my main rig had that happen to it before I got it, and refused to power up. I was able to remove the Ethernet chip with a heat gun and the board came back to life.
EDIT: These two are the Ethernet controller ICs on the original Crosshair. If it's one of these two, then yes, you'll have to remove it.Attached FilesLast edited by c_hegge; 03-31-2014, 04:11 AM.I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Asus Crosshair
so ill try removing it with my trusty heat gun and see what happens. im guessing the Ethernet wont work but nothing a Ethernet add on card shouldnt fix. ill report results soon!
question only one of them seems to instanly get hot to the touch. should i just remove that one for now?Comment
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Re: Asus Crosshair
Yes. Try just the one that gets hot. If problem is not gone, try the other.
Also, since you will be using a heatgun, I suggest you make a heat shield around any electrolytic caps in the nearby surrouding area that may get blasted from the hot air. Aluminum foil should work great. That said, don't cover the caps completely as if you are roasting something in the oven. Just put the shield/aluminum foil so that it deflects heat from the heat gun but does not cover the caps directly on top or the sides where they won't get blasted with the heat gun.Comment
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Re: Asus Crosshair
^
This. I've successfully removed plenty of Ethernet controller ICs using this method (and successfully brought the boards in question back to life).I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Asus Crosshair
So i removed the first one but still the same result. ill remove the 2nd one and report the results.Comment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
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Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Hi,
I have this very stubborn ASUS mobo on the bench, and I already face the wall with it. It just refuses to POST, although everything seems to be OK.
The situation looks like this:
After connecting the board to the power supply on Nuvoton (SLP_S3#, pin 64), the Low signal (50 ohm resistance) appears immediately. PWRNTN# signal goes through Nuvoton to the chipset (confirmed after removing the chipset). The following conditions are then met for the chipset to generate the SLP_S3# signal:
1. RTC oscillates normally (32.768KHz).
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I recently bought an ASUS ROG STRIX B550-F GAMING motherboard that was listed as "dead, not powering on." However, it does show some signs of life. I've performed several basic measurements and would like to share the results.- The board enters a "ready to power on" state after plugging in the PSU.
- Pressing the power button increases power draw.
- Sometimes, touching the RSMRST_L pad with a multimeter probe causes the board to shut off and return to standby.
(taken after pressing the power button, while the board is attempting to start)- H_SKTOOC#
06-11-2025, 01:05 PM -
Hi everyone,
I am trying to learn electronics repair. I purchased a “faulty for spares/repairs” ASUS X99-PRO/ USB 3.1 motherboard for a very low price from ebay – a good enough price to offset the high probability that the board was completely toast and not realistically repairable.
Initial results:
Board would power-cycle when turned on either with switch on board or shorting pwr pins. Fan would spin for a second or so and a QCODE of 00 would display then it would power off and then do the same thing again over and over. I think maybe 2 times in about 100 attempts...
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