a7v600 power supply 12v

  • Thread starter Thread starter Max
  • Start date Start date
M

Max

I did follow the hint to note the 12v output level both with the mb
plug in the case and outside of it. That reads just the same,
12v is actually 12,7 to 12,92, bios reading in both cases.

Is that too much ? the hardware monitor doesn't beep anymore
like when the old PS died, guess it went much higher than that
level on the 12v output ?

is this mb to be returned or what
 
"Max" said:
I did follow the hint to note the 12v output level both with the mb
plug in the case and outside of it. That reads just the same,
12v is actually 12,7 to 12,92, bios reading in both cases.

Is that too much ? the hardware monitor doesn't beep anymore
like when the old PS died, guess it went much higher than that
level on the 12v output ?

is this mb to be returned or what
Click to expand...

You can wait until the power supply dies again. That is an option.

You can test the power supply on another mother board, and see
what the voltage values are with a different board. If the voltages
are within 5% of the proper values, that would suggest the A7V600
motherboard has a problem.

You can take the current motherboard and power supply to a shop,
and have them measure the current being consumed on +3.3, +5,
and +12. I have a "clamp-on" ammeter, that makes current measurements
without contacting the wires. You need to find a shop that has one
of those, to measure the current on each PS output. For the supply
voltages that use multiple wires, all the wires corresponding to
that voltage are put in the jaws of the meter at the same time,
and the currents in the wires are summed together. (The meter does
this by detecting the magnetic field, and the fields from the
wires add together as they pass through the jaws of the meter.)

http://fluke.com/products/sections.asp?AGID=3&SID=5

To determine whether the board is normal or not, the measurements
taken have to be compared to measurements taken on another A7V600.
This is because I cannot find another motherboard with the same
chipset that has power specs. (The only two vendors I know of,
who give current consumption specs for their boards, are
Fujitsu-Seimens and Intel, and neither has a KT600 board.)
Since many motherboards set up in a basic configuration, will
have total power consumptions of 100 watts or so, you wouldn't
expect to find any of the outputs individually approaching
that number. (Even a high performance video card doesn't draw
too much if the 3D features aren't being used.)

(For those who are interested, the Fujitsu datasheets are here.
Most of their products are Intel chipset based, but they are
currently making a K8T800 based board as well:)

http://www.fujitsu-siemens.com/rl/peripherals/mainboards/detailed_overview.asp

HTH,
Paul
 
Unfortunately most clamp ammeters do not measure DC Amps - only AC..... ;-)

Some high-end models (Fluke 337) do measure DC Amps but your common ones do
not.
 
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