Uncorking KELPER - practical guide for beginners.

[rcJten]

Originally Posted by TiN

32h -> 0b00110010.

VID7 is MSB, VID0 is LSB

switch short ground to VID = log "0"
if left open (pullup to 3.3v) - log "1"

in 1.3V case - VID5, VID4 and VID1 have to be pulled up, rest should be ground.

Thank you TiN! Now I just need to get over my fear of voiding my warranty and heat up my soldering iron.

About the Tantalum capacitors you are using: I see that they are 330uf, but what does the |80 and |01 represent?

One last question. If I wire VID 6 to switch 6, and set to ground, do I still need to cut the trace?

[michael_rw]

Originally Posted by rcJten

Thank you TiN! Now I just need to get over my fear of voiding my warranty and heat up my soldering iron.

About the Tantalum capacitors you are using: I see that they are 330uf, but what does the |80 and |01 represent?

One last question. If I wire VID 6 to switch 6, and set to ground, do I still need to cut the trace?

good questions! id like to know the answer to these as well...
thanks TiN

[rcJten]

Ok, I think I can answer my own question about the capacitors, but someone correct me if I am wrong.

They are Sanyo D3L size, 330uf, 6.3v (indicated by the j). The 80 and 01 are simply lot numbers.

[xxmastermindxx]

Hey guys, I have an Asus DC II 680, however don't have (and won't be buying) a Rampage board and SB-E processor to go with it. Anyone know if it's possible to still adjust voltage above and beyond the 1.175V limit manually using VR's, after removing resistor and such? Did a little searching and didn't come up with much.

I'm assuming it can be done since it is onboard VR's that would do this on a ROG motherboard anyway, no?

[BenchZowner]

YES ( char limit )

[xxmastermindxx]

Originally Posted by BenchZowner

YES ( char limit )

Thanks BenchZowner. Now the question is, can it be done using the 6 existing solder points on the DC II card? My last Vmod was to a Ti4200 lol so I've been out of the loop a long time.

[BenchZowner]

Yes again

You need to measure the resistance between the mod point and a ground and place a 20x VR ( Variable Resistor ) between them.

( power on with the VR at its maximum resistance, and lower resistance to raise the voltage )

[xxmastermindxx]

Originally Posted by BenchZowner

Yes again

You need to measure the resistance between the mod point and a ground and place a 20x VR ( Variable Resistor ) between them.

( power on with the VR at its maximum resistance, and lower resistance to raise the voltage )

Going to pick up a few things for this tomorrow. What kind of VR would you recommend exactly, and did you mean a 20K ohm VR?

For ground, I am going to admit that I'm not quite sure I remember how to find it properly. Any advice?

As for mod and measure points, let me know if I'm on the right track with the pic below. Thanks again!

[BenchZowner]

Yes, the red points are the "mod" points.

What you need to do is:
Get your DMM ( Digital MultiMeter ) probes and with the 1 probe on the mod point, put the other probe on a ground ( easy ground points = PCI-Express power connectors solder on the back of the pcb, under each PCI-Express power connector there are two rows of solder points, the lower middle ones are grounds ) [ another ground point is the metal on the display connectors in the rear side of the card... and the metal on the holes for the screws as well ]

Measure the resistance between the OVG point and a ground.
multiply it by 20, and that's the value of the Variable Resistor ( the blue plastic thingies with the screw adjusted bolt that changes its resistance value ).
For example if the resistance between OVG and a ground is 1kOhm ( 1000 Ohm ) then you need a 20kOhm ( 20000 Ohm ) variable resistor.

You need to solder the 1st and 2nd leg of the VR ( using the two outer legs will give you the max resistance and no adjustment ), solder the one leg of the VR to a ground, and the other leg to the OVG point.

Before you solder the VR on, make sure its set to its max resistance value.
Turn the screw on it towards the 2nd leg, and measure the resistance between the first two legs of the VR to see if its near its resistance value.

[xxmastermindxx]

Originally Posted by BenchZowner

Yes, the red points are the "mod" points.

What you need to do is:
Get your DMM ( Digital MultiMeter ) probes and with the 1 probe on the mod point, put the other probe on a ground ( easy ground points = PCI-Express power connectors solder on the back of the pcb, under each PCI-Express power connector there are two rows of solder points, the lower middle ones are grounds ) [ another ground point is the metal on the display connectors in the rear side of the card... and the metal on the holes for the screws as well ]

Measure the resistance between the OVG point and a ground.
multiply it by 20, and that's the value of the Variable Resistor ( the blue plastic thingies with the screw adjusted bolt that changes its resistance value ).
For example if the resistance between OVG and a ground is 1kOhm ( 1000 Ohm ) then you need a 20kOhm ( 20000 Ohm ) variable resistor.

You need to solder the 1st and 2nd leg of the VR ( using the two outer legs will give you the max resistance and no adjustment ), solder the one leg of the VR to a ground, and the other leg to the OVG point.

Before you solder the VR on, make sure its set to its max resistance value.
Turn the screw on it towards the 2nd leg, and measure the resistance between the first two legs of the VR to see if its near its resistance value.

Good info! Thanks again man, I appreciate it.

I'm metering between any and all ground I can find and the OVG point, and I'm getting nothing whatsoever on either of my meters. Stupid question here, but does the card have to be powered on to measure that point?