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.
|C17||0.22µF||50V||Nippon Chemi-Con EKMA500ELLR22MD07D||4mm||7mm||?|
|C18||0.47µF||50V||Nippon Chemi-Con EKMA500ELLR47MD07D||4mm||7mm||?|
|C152||2200µF||16V||Nippon Chemi-Con ELXJ160ELL222MK30S||12.5mm||30mm||39mΩ|
|C153||2200µF||10V||Nippon Chemi-Con ELXJ100ELL222MK25S||12.5mm||25mm||25mΩ|
|C252||470µF||25V||Nippon Chemi-Con ELXJ250ELL471MJ20S||10mm||20mm||88mΩ|
|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||?|
|C906||1000µF||10V||Nippon Chemi-Con ELXJ100ELL102MJ20S||10mm||20mm||88mΩ|
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.