I paid Asus's electronic technician to mod my generic 400 watts. What I want is to mod 3.3V and 5V lines to increase by another 5 percent. Unfortunately generic PSU don't have the pots to adjust and worse, the voltage regulator inside are fixed by factory's transformers. So I was disappointed..... nevertheless, the Asus technician cheer me up by increasing the wattage probably up to 25%. How?
Inside the PSU, He added another "schottky rectifier SBL3040PT " parallel to existing rectifier. There are two big rectifiers inside my PSU, I guess one is for 5V and another one for 3.3V. The location of the rectifiers are on the right side, next to all the cables going out to mobo, and cooled with a heatsink plate. You can solder it underneath the PCB. Polarity doesn't matter as long as the middle leg (#2) always in the middle. And don't forget to cover the body of rectifier from touching anything .
The results? My 5V lines go up a little bit from 4.99V to 5.02V and never drop below 4.99V even under full loads. Ditto with 3.3V lines is always 3.26V. I re-check with voltmeter for more accurate readings, the 5V and 3.3V lines are actually 5.02V and 3.33V respectively.
I wish to show some pictures and SBL3040PT datasheet, but how?
Larva... is this mod B.S ? according to 3040 datasheet, the amperage of the rectifier is rated at 30A, and by doubling it, the total amperage is 60A.
Inside the PSU, He added another "schottky rectifier SBL3040PT " parallel to existing rectifier. There are two big rectifiers inside my PSU, I guess one is for 5V and another one for 3.3V. The location of the rectifiers are on the right side, next to all the cables going out to mobo, and cooled with a heatsink plate. You can solder it underneath the PCB. Polarity doesn't matter as long as the middle leg (#2) always in the middle. And don't forget to cover the body of rectifier from touching anything .
The results? My 5V lines go up a little bit from 4.99V to 5.02V and never drop below 4.99V even under full loads. Ditto with 3.3V lines is always 3.26V. I re-check with voltmeter for more accurate readings, the 5V and 3.3V lines are actually 5.02V and 3.33V respectively.
I wish to show some pictures and SBL3040PT datasheet, but how?
Larva... is this mod B.S ? according to 3040 datasheet, the amperage of the rectifier is rated at 30A, and by doubling it, the total amperage is 60A.
Last edited: