Delta DPS-200PP 89G

This power supply was found inside my HP Vectra computer. It was made in 1998 and has apparently died of bad caps. I’m publishing here the full capacitor list, along with some notes.

Capacitor list

Cap Value Volt. Model Diam. Height ESR
C3 470µF 200V Rubycon 200MXP470MA40 22mm 40mm ?
C4 470µF 200V Rubycon 200MXP470MA40 22mm 40mm ?
C17 0.22µF 50V Nippon Chemi-Con EKMA500ELLR22MD07D 4mm 7mm ?
C18 0.47µF 50V Nippon Chemi-Con EKMA500ELLR47MD07D 4mm 7mm ?
C103 2200µF 6.3V Nichicon UPJ0J222MPD 10mm 31.5mm 66mΩ
C152 2200µF 16V Nippon Chemi-Con ELXJ160ELL222MK30S 12.5mm 30mm 39mΩ
C153 2200µF 10V Nippon Chemi-Con ELXJ100ELL222MK25S 12.5mm 25mm 25mΩ
C201 22µF 50V Rubycon 50YXF22MEFC5X11 5mm 11mm ?
C252 470µF 25V Nippon Chemi-Con ELXJ250ELL471MJ20S 10mm 20mm 88mΩ
C253 100µF 25V Taicon TVT1E101MK06110LL3 6.3mm 11mm ?
C302 3300µF 10V Nippon Chemi-Con ELXJ100ELL332MK35S 12.5mm 35mm 33mΩ
C303 3300µF 10V Nippon Chemi-Con ELXJ100ELL332MK35S 12.5mm 35mm 33mΩ
C601 1µF 50V Nippon Chemi-Con EKMA500ELL1R0MD07D 4mm 7mm ?
C603 0.22µF 50V Nippon Chemi-Con EKMA500ELLR22MD07D 4mm 7mm ?
C604 0.22µF 50V Nippon Chemi-Con EKMA500ELLR22MD07D 4mm 7mm ?
C605 0.22µF 50V Nippon Chemi-Con EKMA500ELLR22MD07D 4mm 7mm ?
C904 100µF 25V Nichicon UPJ1E101MED 6.3mm 15mm 390mΩ
C905 10µF 50V Taicon TVT1H100MK05110LL1 5mm 11mm ?
C906 1000µF 10V Nippon Chemi-Con ELXJ100ELL102MJ20S 10mm 20mm 88mΩ
C909 100µF 25V Taicon TVT1E101MK06110LL3 6.3mm 11mm ?

Nominal ESR measured at 20ºC, 100kHz.

C18 is hidden between the heatsink closest to the input stage and a varistor.

C17, C18, C601, C603, C604 and C605 are timing capacitors used in low voltage parts of the circuit for non-critical purposes (power on, power off delay, overvoltage and overcurrent protection). Given their DC bias is low enough, they can be replaced with MLCC capacitors which are easier to obtain nowadays.

C152, C153, C302 and C303 are all part of the output smoothing section, and thus their values are not critical, so feel free to replace them with higher value caps. I’ve replaced all of them with 3300µF 16V capacitors, because it was cheaper to order five of these than a singular unit of each specific value.