PDA

View Full Version : NF7 Re.2.0 VDD mod voltage problem!


celemine1Gig
08-01-2003, 02:00 PM
Hi,

I recently did the VDD and VDimm mod on my Abit NF7-S Rev.2.0. I also attached a wire to one of the measuring points for VDD, to be able to measure the voltage easier than in the cramped area under the AGP port.
Then, before connecting the ground wire for my two mods to one of the 3Pin-headers (soldered the two grund wires to one 3Pin cable to make the mods plug&play), I wanted to measure the standard voltage, to be sure.
I selected 1,4V VDD in Bios, as it was only a test setup with only 166 MHz FSB.
After the bootup I first measured the voltage at my new measuring points and got 1,12V.
I thought WTF is going on here, something must be wrong with my measuring points. I then tried the other measuring point on the board, right under the AGP slot (the upper leg of the most left mosfet) and again got 1,12V.:eek:

What's up with my board???

I don't want to connect the mod to increase the VDD, if I'm not able to get the right voltages displayed.

Please help me!

Thx in advance!

Ingo:) :toast:

celemine1Gig
08-02-2003, 11:01 AM
Well, this afternoon I tried all bios settings for VDD and mearured the voltage and I was shocked!

The board seems to undervolt the VDD like hell, just like the VCore.

With selected 1,7V in Bios, the real output voltage was 1,45V. :eek:

Greets

Ingo

saaya
08-07-2003, 06:34 PM
u sure :confused: i really dont think so... whats your max stable fsb with "1.45vdd" and vcore? how much is it undervolting the vcore? there must be somehing wrong with the multimeter your reading the voltages of...

celemine1Gig
08-07-2003, 07:57 PM
Hmm, I was shocked by these voltages, too. At the moment, I can't test the max stable FSB, because I don't have the RAM to test the board with and some other parts are also missing.

On the one hand I'm quite sure that the multimeter, I measured the voltages with, is absolutely OK, but on the other hand, I don't think that I made a mistake while soldering. I connected the wire to only the one leg on the IC it should be connected with for the VDD mod and the other wire to ground. I'm absolutely sure that I connected these wires the right way to the resistor (10K trimmer, set to ~5K).
When I connect the ground wire, so that the voltage mod is working, I get a voltage reading of 1,59V at 1,6V selected in bios. :shrug:

caspergt
08-16-2003, 10:01 AM
Hehe i even CAN`T measure my voltage.
So i was like, well 30 ohms is 0.1 volt, and i`m done :D