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Cannot power up system
watrbk Jan-23-01 06:58 PM
I have a FICVA503+ motherboard with an AMD 550 processor. The problem started when i got a floppy drive fails message on startup. I found that the onboard floppy controller card was not working.I put in a controller card and got the floppy up and everything worked fine and then the system failed to come on. I checked the power button it is OK. I removed the adapter cards and shorted the ATX power on connectors and the power supply fan will run but nothing else if I plug it back in.I have removed the motherboard and checked the standoffs and retighted the board but still will not power up. Do I have a short in the board and are there any other tests to check this out.
Thanks for any help

1. Troubleshooting a Dead Motherboard
lbyard Jan-23-01 08:46 PM
In response to message 0
The floppy failure could be pointing to a power supply problem… I would disconnect the power cord form the power supply, be sure the power supply is set for 110 or 220 volts depending on your location and power and double check it (most have a 110/220 switch), look for bent pins on the motherboard headers and straighten, carefully inspect the motherboard for black soot from bad bearings and clean and replace the culprit, inspect the motherboard for broken or burnt components, put the motherboard back in the computer and screw it down (don’t over-torque), inspect/shake and listen for loose metallic objects on top of and under the motherboard and in expansion board slots, disconnect all cables going to all drives, connect the ATX power supply to the motherboard, reseat the memory, plug-in and screw-down the display adapter and nothing else (push down on the top, front of the adapter and make sure it is properly seated by looking at it all along the PCI or AGP connector), connect the power-on switch and the speaker (there should be no other cables, except the power supply, connected to the motherboard), check the monitor plug for bent pins, connect the monitor and nothing else, plug-in the power cord, and push the power-on button. If that doesn’t revive it, pull the power cord, find the jumper that clears the CMOS, put it into the clear position for several minutes, put it back in the normal position, plug-in the power cord, and push the power-on button. If you apply power to the motherboard with the jumper in the clear position you may damage the motherboard. Next, push down on all chips that have sockets in attempt to reseat them. If that doesn’t work, let it sit overnight, and try again. Try another power supply… See http://duxcw.com/faq/mb/mb.htm for more info. Try different memory. Pull and reset the processor. Try another processor. Note: If you apply power to a motherboard with an Athlon or Duron processor without the CPU fan connected, even for a few seconds, you will fry it (see http://duxcw.com/digest/guides/cpu/socketa/heattip.html). Replace the motherboard. Larry

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