Post by Mr.Scott on Apr 23, 2016 18:32:30 GMT -5
VCore-Mod
Datasheet of the chip:
www.intersil.com/data/fn/fn4765.pdf
Connect the middle pin of the 50K potentiometer to Pin #7 (FB) of the HIP6301 chip and then connect the outer pin of the potentiometer to Ground.
Pin #9 of the HIP6301 is a Ground pin, but we will need to solder a cable to the next Pin #10 for the OVP-Mod. I didn't like the idea of soldering two cables right next to each other. That would've been very hard, and why do it the hard way, if there's an easier way right around the corner. For Ground I just used the Ground point from a left-empty solder-pad ("EC18"), where DFI had planned to put a capacitor, but cancelled that idea obviously (solder point in the area that is marked white, is GROUND). Use that point as Ground for both the VCore- and the OVP-mod, it will have no negative impact on the mods.
OVP-Mod
Same chip, so no new datasheet link needed (still HIP6301).
The OverVoltage Protection-Mod is only needed, if you are going to run a VCore higher than 2.0V.
As I already mentioned above, the OVP-Mod involves connecting a 50K potentiometer from Pin #10 of the HIP6301 chip to Ground.
Just connect the outer pin of the potentiometer to the Ground point mentioned above (left-empty solder-pad, not far from the HIP6301 chip). Then connect the middle pin of the pot to Pin #10 (VSEN). Well, that's it and you've finished the VCore and OVP mods.
Picture for both VCore- and OVP-Mod
VDimm-Mod
Datasheet of the chip:
www.semtech.com/pdf/sc2616.pdf
The middle pin of the 100K potentiometer normally would need to be connected to SC2616's Pin #1 (FB). But as the chip has very tiny legs/contacts, that would be nearly impossible to do with normal equipment. Thus we trace pin #1 to a SMD/SMT resistor just next to the chip (marked in the pic). Now you need to connect the potentiometer's middle pin to the side of that resistor, facing the greenish capacitor next to it, as seen in the pic. After that you have to connect the outer pin of the potentiomter to Ground. Just like when doing the VCore-/OVP-Mod, I used an empty solder pad ("EC57") as Ground. Again, it was planned to be used for a cap and was then left empty in the final product (see the pic for details). Measuring point for Vdimm is on the second mosfet from the left, under the RAM slots. Make sure to take a look at the pic for the correct leg, as it depends on how your board is placed on the table. That way, you can't go wrong.
Southbridge-VMod
For that last mod, again a 50K poti is needed. To supply more voltage to the southbridge chipset, it's required to remove the SMD/SMT resistor "R151", next to "VR4" (looking like a mosfet, right next to the second PCI slot, counting from the top). You just desolder that resistor and connect the upper solder-point, which is now empty (after having removed the SMD/SMT resitor), to the middle pin of the 50K potentiometer. Afterwards, you connect the outer pin of the potentiometer to a Ground point nearby. I used the solder-pad ("EC32") next to the battery, right under PCI-slot #3.
The measuring point for the southbridge voltage is the upper contact of the capacitor "EC42", right next to the other soldering-points.
Datasheet of the chip:
www.intersil.com/data/fn/fn4765.pdf
Connect the middle pin of the 50K potentiometer to Pin #7 (FB) of the HIP6301 chip and then connect the outer pin of the potentiometer to Ground.
Pin #9 of the HIP6301 is a Ground pin, but we will need to solder a cable to the next Pin #10 for the OVP-Mod. I didn't like the idea of soldering two cables right next to each other. That would've been very hard, and why do it the hard way, if there's an easier way right around the corner. For Ground I just used the Ground point from a left-empty solder-pad ("EC18"), where DFI had planned to put a capacitor, but cancelled that idea obviously (solder point in the area that is marked white, is GROUND). Use that point as Ground for both the VCore- and the OVP-mod, it will have no negative impact on the mods.
OVP-Mod
Same chip, so no new datasheet link needed (still HIP6301).
The OverVoltage Protection-Mod is only needed, if you are going to run a VCore higher than 2.0V.
As I already mentioned above, the OVP-Mod involves connecting a 50K potentiometer from Pin #10 of the HIP6301 chip to Ground.
Just connect the outer pin of the potentiometer to the Ground point mentioned above (left-empty solder-pad, not far from the HIP6301 chip). Then connect the middle pin of the pot to Pin #10 (VSEN). Well, that's it and you've finished the VCore and OVP mods.
Picture for both VCore- and OVP-Mod
VDimm-Mod
Datasheet of the chip:
www.semtech.com/pdf/sc2616.pdf
The middle pin of the 100K potentiometer normally would need to be connected to SC2616's Pin #1 (FB). But as the chip has very tiny legs/contacts, that would be nearly impossible to do with normal equipment. Thus we trace pin #1 to a SMD/SMT resistor just next to the chip (marked in the pic). Now you need to connect the potentiometer's middle pin to the side of that resistor, facing the greenish capacitor next to it, as seen in the pic. After that you have to connect the outer pin of the potentiomter to Ground. Just like when doing the VCore-/OVP-Mod, I used an empty solder pad ("EC57") as Ground. Again, it was planned to be used for a cap and was then left empty in the final product (see the pic for details). Measuring point for Vdimm is on the second mosfet from the left, under the RAM slots. Make sure to take a look at the pic for the correct leg, as it depends on how your board is placed on the table. That way, you can't go wrong.
Southbridge-VMod
For that last mod, again a 50K poti is needed. To supply more voltage to the southbridge chipset, it's required to remove the SMD/SMT resistor "R151", next to "VR4" (looking like a mosfet, right next to the second PCI slot, counting from the top). You just desolder that resistor and connect the upper solder-point, which is now empty (after having removed the SMD/SMT resitor), to the middle pin of the 50K potentiometer. Afterwards, you connect the outer pin of the potentiometer to a Ground point nearby. I used the solder-pad ("EC32") next to the battery, right under PCI-slot #3.
The measuring point for the southbridge voltage is the upper contact of the capacitor "EC42", right next to the other soldering-points.
