System dead System power supply comes on and nothing else. cd will not open with the bus cable connected. can not determine if hard drive turning, no sound and can not feel the fibration of working. Can not find info on BIOS - if EPROM or what. all fans come on. tecnical information not available. No theroy of operation. DVM voltage checks look good
Computers & Internet - Mach Speed - (MSNV-939) Motherboard
Answers & Comments
Hi Fr.David
You mention '..info on BIOS..'
Is your BIOS (or anything) displaying on the screen?
If screen is also dead, then your PSU 5V (red) section is suspect.
As the fans are fanning then 12V DC (yellow) is still OK.
To check your PSU, unplug & disconnect all power connector cables (note where they go, esp the M/Board supply).
Some PSU's have a green 'signal good' wire which to test must be grounded with a paper-clip etc to black.
This tells the Power Supply Unit to start up.
Black is common negative, Yellow 12V positive, Red 5V positive.
I'm positive.
I hope your test results are not too negative. ;)
Hope this helps.
Clive.