View Full Version : how to mod a psu
saaya
08-07-2003, 11:44 AM
how do i mod my psu? fsp fortron 350W (identical to the 400W psu) what vrs do i need and where do i solder them on? :)
Hell-Fire
08-08-2003, 06:47 PM
Can you look at the ATX connector and tell us if there are thin wires running along side the thicker ones for the 3.3v, 5v, and 12v rails?
Wire colors are orange (3.3), red (5v), and yellow (12v).
If not, then we will have to look inside the psu to figure it out.
Also, the wire could be brown for the 3.3v rail sometimes..and is usually the case if there are not sense wires for all the rails on the ATX connector.
saaya
08-09-2003, 07:15 AM
nope, my psu has no voltage sense cables to raise the voltages... ill have to solder vrs directly to the psu... but i dont know where...
is there a guide somewhere?
sjohnson
08-09-2003, 07:51 AM
Does the fortron have any trim pots inside? You may be lucky and be able to trim the voltages with no mods if that fortron has the potentiometers already in place. My old 300w fortron had one for the 5/12 rail.
If not, it will take an electronics expert to find the right resistor and suggest replacement value(s). No, I'm not an electronics expert, can't help in that case.
saaya
08-09-2003, 09:19 AM
how do those pots look like? something with a screwdriver mask so i can adjust it right? hmmmm
sjohnson
08-09-2003, 10:01 AM
The pots are usually small, about the size and shape of a button. They often have an "X" shaped slot in the center for the adjustment tool.
saaya
08-09-2003, 11:43 AM
ok ill check that out tomorrow thx a lot!
Hell-Fire
08-11-2003, 07:46 PM
Those lil pots that are on the inside of some psu's can be a byt*h to adjust sometimes.
From what I hear the TTGI have good mounts for their onboard pots, but I dont know about others. I would be very careful when ya turn it. Snap that bugger off and you have to remove the enitre psu pcb and start re-soldering connections.
If ya gonna void yer warranty, just do it the easy way and mod the sense lines..lot less headache.
saaya
08-11-2003, 07:54 PM
i dont have any sense rails... i told ya.
Hell-Fire
08-11-2003, 08:21 PM
Originally posted by saaya
i dont have any sense rails... i told ya.
:doh:
sorry m8, missed that post..havent been on this thread for bit.
Can you take a pic of the inside of the psu and the ATX connector?
Could be that you need to have a look at some resistors that are on the pcb.
saaya
08-11-2003, 08:27 PM
lol so you finally had to take your sig down?
Hell-Fire
08-11-2003, 09:05 PM
LOL...what ya mean...?
saaya
08-12-2003, 07:48 AM
lol :p
Hell-Fire
08-12-2003, 01:34 PM
Sig, whats a sig?