Contents
Hipro HP-D3057F3H
The Original Capacitors
These power supplies are very common in Compaq and HP branded computers, and I often run into them with a failed 5Vsb capacitor, which prevents the unit from starting. They usually use Teapo capacitors throughout the secondary side, although I occasionally come across units with LTEC capacitors. They use four 2200µF 16V (two on the 12V rail, two on the −12V rail), four 2200µF 10V (two on the 3.3V rail, two on the 5V rail), a 1000µF 10V and a 470µF 10V capacitor (both on the 5VSB rail).
The replacement capacitors
Again, I had to drop the capacitance significantly on all but the 5Vsb rail, where I was able to keep it the same.
| Role | Qty. | Original Value | Replacement |
| 12V Filtering |
2 | 2200µF 16V Teapo SC |
820µF 16V Nichicon LG |
| 5V Filtering |
2 | 2200µF 10V Teapo SC |
1500µF 6.3V Sanyo OS-CON SEPC |
| 3.3V Filtering |
2 | 2200µF 10V Teapo SC |
1500µF 6.3V Sanyo OS-CON SEPC |
| -12V Filtering |
2 | 2200µF 16V Teapo SC |
820µF 16V Nichicon LG |
| 5Vsb Filtering | 1 | 1000µF 10V Teapo SC |
1000µF 6.3V Nichicon FPCAP L8 |
| 5Vsb Filtering |
1 | 470µF 10V Teapo SC |
470µF 6.3V Sanyo OS-CON SEP |
The Testing
| Test | Result |
| Performance Test |
Pass |
| 24 Hour In-PC Test |
Pass |
| Rail | Load | Voltage (After) | Voltage (Before) | Ripple (After) | Ripple (Before) |
| 12V | 16.5A | 11.79V | 11.78V | 21.4mV | 23.0mV |
| 5V | 15A | 5.06V | 5.07V | 10.4mV | 10.4mV |
| 3.3V | 10A | 3.36V | 3.34V | 5.0mV | 4.4mV |
| -12V | 0.1A | -12.61V | -12.65V | 17.0mV | 13.0mV |
| 5Vsb | 1A | 5.03V | 5.02V | 2.0mV | 3.0mV |
This power supply did much better than the SmartPower, passing both tests. This power supply is obviously more tolerant of different capacitors than the CWT-built Antec SmartPower.
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