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Fried mobo?

post #1 of 6
Thread Starter 
ok a friend a few weeks ago had a big PSU failure
while booting
it make some high pitched noise
some smoke came out
and the computer didnt work anymore! duh
(I build him a cheapo replacemnt system)

i went over and sure nuff the power supply had cooked
the HDD and CD drive went with it
but the RAM and CPU didnt

i wasnt sure about the mobo
it has no scorch marks, and there is no concentrated smell of burn
(all over cuz of the PSU smoke)

is doesnt boot with a new PSU
but today I realised the CMOS batterys is DEAD

so im gonna replace the battey, and maybey I had the CMOS jumper set wrong

its an older, but good ASUS skt478 board
if replacing the battery doesnt work...
how can I tell forsure thats its dead or alive?
i dont really want to replace all the caps and coils
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post #2 of 6
Well, first, the power signals are buried in the middle of the board - so if they torched, it would not be evident.

If you do not have one, I suggest a PCI POST card (like this http://www.biosman.com/port80.htm ).. They can be great in finding MB failure points.

Other things to look for:
- Do your fans spin?
- Does HDD light turn on?
- Does powerlight turn on?
- Does monitor change amber light on boot?
- Does board light turn on?
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post #3 of 6
Thread Starter 
the board light come on when the PSU switch is turned on
i only had the ram and CPU in

when I press the power button, nothing happens
Finaly Dual Core
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post #4 of 6
Thread Starter 
oh and I can get one of those testers at my COMPUSA for under $20
Finaly Dual Core
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Finaly Dual Core
(13 items)
 
  
CPUMotherboardGraphicsRAM
Pentium D 805 4Gz ABIT AW9D-MAX Saphire x1950 Pro 512 4x512 Buffalo Firestix 
Hard DriveOptical DriveOSMonitor
160 SATAII 2x30 IDE RAID Samsung DVD-RW e / XP Pro / Ubuntu 7.04 Viewsonic 19" Pro 
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post #5 of 6
Sure you got power hooked up to right pins?
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G.SKILL Ripjaws Series  Samsung 840 EVO-Series  Samsung 840 EVO-Series  ASUS 24x DVD-RW  
CoolingCoolingOSMonitor
Cooler Master Hyper 212 EVO  7x Phanteks PH-F140SP  Windows 8.1 ASUS VG248QE (x2) 
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AMD FX-8350 Black Edition ASUS Crosshair V Formula-Z AM3+  ASUS R9270X-DC2T-4GD5  ASUS R9270X-DC2T-4GD5  
RAMHard DriveHard DriveOptical Drive
G.SKILL Ripjaws Series  Samsung 840 EVO-Series  Samsung 840 EVO-Series  ASUS 24x DVD-RW  
CoolingCoolingOSMonitor
Cooler Master Hyper 212 EVO  7x Phanteks PH-F140SP  Windows 8.1 ASUS VG248QE (x2) 
KeyboardPowerCaseMouse
Microsoft 4000 EVGA SuperNOVA 750G2 80PLUS  Phantek Enthoo Logitech G500  
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post #6 of 6
Thread Starter 
positive
and im sure the CMOS battery is dead
im gonna try it again today or tomorrow
Finaly Dual Core
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CPUMotherboardGraphicsRAM
Pentium D 805 4Gz ABIT AW9D-MAX Saphire x1950 Pro 512 4x512 Buffalo Firestix 
Hard DriveOptical DriveOSMonitor
160 SATAII 2x30 IDE RAID Samsung DVD-RW e / XP Pro / Ubuntu 7.04 Viewsonic 19" Pro 
KeyboardPowerCaseMouse
Generic 500 generic 20amp 12v My Sexy Baby Inland Laser Mouse 
Mouse Pad
My Desk 
  hide details  
Reply
Finaly Dual Core
(13 items)
 
  
CPUMotherboardGraphicsRAM
Pentium D 805 4Gz ABIT AW9D-MAX Saphire x1950 Pro 512 4x512 Buffalo Firestix 
Hard DriveOptical DriveOSMonitor
160 SATAII 2x30 IDE RAID Samsung DVD-RW e / XP Pro / Ubuntu 7.04 Viewsonic 19" Pro 
KeyboardPowerCaseMouse
Generic 500 generic 20amp 12v My Sexy Baby Inland Laser Mouse 
Mouse Pad
My Desk 
  hide details  
Reply
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