Volt modding an enermax EG465P-VE FCA?

[Ace-a-Rue]

You must of missed that point about setting the ohms on the pot before attaching/soldering or powering up. On my model Enermax, I had to set about 7K ohms before soldering to the circuit board.

I am going to break back into the PSU case and see what ohms is now reading with my 5/12 at 5.3/12.4. I want to see if there is any difference in readout for the R72 versus R82 resistor.

[a.p.versteeg]

Originally posted by Ace-a-Rue
You must of missed that point about setting the ohms on the pot before attaching/soldering or powering up. On my model Enermax, I had to set about 7K ohms before soldering to the circuit board.

I am going to break back into the PSU case and see what ohms is now reding with my 5/12 at 5.3/12.4. I want to see if there is any difference in readout for the R72 versus R82 resistor.

it`s the R73, and yes there is a difference in ohm.
The R82 stil in place is 2.24Kohm and the R73 is with the resistor still in place 2.44 Kohm.

[Ace-a-Rue]

In another Enermax thread talking about this mod (my model Enermax), they said to preset the 10K pot to 7.5K to approximate 5/12 output. I used 7K to be conservative for the output until I could check it.

It looks like this newer model with R73 resistor would have a higher pre-set on the 10K pot maybe around 8K or slightly higher before soldering to the board.

[RuKK]

//edit Alright so maybe I have another question.. the resistor has 3 pins on it, I know the middle one is ground, so the quesetion is do I just attach ground and one of the other two to the resistor on the PSU, or do I ignore ground and use the other two?

Ok so if I add a 1k VR to my R82 and set it to full resistance I can then back it down after starting the psu up (obviously not with my system attached)?

My only problem is I got my 1k VR from a dead AT PSU, and its range is about 2/3rds of a turn for 0 to 1k ohms.. is this too sensitive? Thank you very much,

-RuKK

[Nico]

use the middle pin and one of the two outside pins, depending on which direction you wish to turn the POT. I usually set it so clockwise turns increase voltage.(more voltage is less resistance from the POT)

[iceman2g]

Would I adjust the voltage while the system is on? Also i've got one of these pots how would I connect it in series?

[Ace-a-Rue]

Originally posted by iceman2g
Would I adjust the voltage while the system is on? Also i've got one of these pots how would I connect it in series?

I copied this (now modified for you) from a written review that I did a while back using this type of POT. Make sure you got the right ohms trimmer which should be 10K so you can set 7.5K before doing any soldering.

you will solder your 22 or 24 gauge multi-strand to the middle lug of a 10K pot. Now, depending on what direction you want to turn the pot to increase (raises voltage output) resistance will determine which outer lug you will use to solder the other wire. You should set the resistance first to 7.5K. WARNING, REMEMBER WHICH DIRECTION INCREASES RESISTANCE, IN FACT, DIAGRAM IT ON PAPER SO YOU DON'T FORGET!

[iceman2g]

ok my R82 resistor reads violet/brown/green/brown/brown. I've got the 460W version of this PSU. Would this mod work for me?

[Ace-a-Rue]

Don't know about the colors. Read thru this thread to see if someone posted those colors

[Electroid]

Enermax EG465AX-VE(G) vmods:
+3.3V ?
+5V/12V, R73?

[sjohnson]

To decode the color bands on a resistor, check out http://webhome.idirect.com/~jadams/e...stor_codes.htm

[thesaucier]

I was looking at my voltages in the bios and On a NF7 they would drop to 11.76 while at 1.85 vcore even more of a drop to say 11.74 while at 1.9 vcore. I have been having problems getting higher than 125 FSB and I think this is it. While looking at this tread I checked my molex voltages and they read steady 5.17 and 12.17 volts. What should I be thinking now! what reading should I be looking at. It seems to be acting like a voltage problem and the bios seems to show this but the readings at the molex dont. Im not sure how accurate this mutimeter is however.

[Ace-a-Rue]

I would say it is the board voltage regulation that is out of whack. If your Molex voltages are that, the low 12v rail on the board could be caused by higher resistance in the trace wiring or the regulation is sub par.

If you put in the adjusting pot, you can put higher 5/12 to the board to help compensate for the lost through the trace wiring or regulators...

[thesaucier]

Originally posted by Ace-a-Rue
I would say it is the board voltage regulation that is out of whack. If your Molex voltages are that, the low 12v rail on the board could be caused by higher resistance in the trace wiring or the regulation is sub par.

If you put in the adjusting pot, you can put higher 5/12 to the board to help compensate for the lost through the trace wiring or regulators...

Would this effect the 12+ and 5+ to the molex and raise those as well or does this just effect the 12+ and 5+ to the board??
I dont want to burn out the drives you know.

Thanks for the reply

[Ace-a-Rue]

5% override for 5 would be 5.25v and the 12 would be 12.6v. PS makers allow 10% before they would switch out a PS for warranty. Just make sure you have some fan cooling the drives. They should be ok.

[thesaucier]

Thanks Ace-a-Rue I have 12.17 at the 4 pin molex now but I have 11.74 in the bios thats what concerns me. Could the 4 pins be getting the power and the board not??

[Ace-a-Rue]

Originally posted by thesaucier
Thanks Ace-a-Rue I have 12.17 at the 4 pin molex now but I have 11.74 in the bios thats what concerns me. Could the 4 pins be getting the power and the board not??

If you said you measured at the Molex connector is correct, you are losing 12v voltage somewhere along the line. of course, this is predicated on your bios or probe readings are accurrate. Some times bios and software probe readings can be inaccurate.

There are two ways to help yourself. One is do the mod to the PS, or, start reading the voltages at the Mosfet around the cpu to see if it is really low. Be careful with this operation so not to slip with your probe and short out the Mosfet, which will kill the board. Choices!

[thesaucier]

Originally posted by Ace-a-Rue
If you said you measured at the Molex connector is correct, you are losing 12v voltage somewhere along the line. of course, this is predicated on your bios or probe readings are accurrate. Some times bios and software probe readings can be inaccurate.

There are two ways to help yourself. One is do the mod to the PS, or, start reading the voltages at the Mosfet around the cpu to see if it is really low. Be careful with this operation so not to slip with your probe and short out the Mosfet, which will kill the board. Choices!

That sounds good to get an Idea of whats going on. What are the measure pionts I should look at?

[Ace-a-Rue]

Originally posted by thesaucier
That sounds good to get an Idea of whats going on. What are the measure pionts I should look at?

You should see mosfets, and, I presume you know what I am talking about???? They should be in sets of two, aprox. 6 or 8 around the cpu socket. Not all are going to give you 12v readings but one or two will. be careful here so to not slip with the probe and short out between out and middle legs!

[thesaucier]

Originally posted by Ace-a-Rue
You should see mosfets, and, I presume you know what I am talking about???? They should be in sets of two, aprox. 6 or 8 around the cpu socket. Not all are going to give you 12v readings but one or two will. be careful here so to not slip with the probe and short out between out and middle legs!

Go either leg to ground or what? And thanks for the help.

[Ace-a-Rue]

Red probe to either outer leg and the ground probe should be clipped on any metal within the case or PS.

[thesaucier]

Thanks a ton!!!!!!!!!!!!!!

[thesaucier]

One more stupid question this is dc current right.

[Ace-a-Rue]

YES!

[thesaucier]

ACE you the man! thanks