PowerMac G4 MDD
- For more information, see this article's corresponding Wikipedia page: Device.
|Batteries||One (1) PRAM Battery|
|Mounting Technology||Through Hole, SMD, BGA, Sockets|
|Capacitor Types||Aluminum Electrolytic|
Symptom or Problem Encountered
- Power Supply is Faulty with bad capacitors.
- When you try to power up your MDD, you will typically get a quick power light and fan spin and it will shut off.
- Recapping the entire power supply generally fixes the problem. Although there is a chance some other components are faulty.
Please be careful when opening the power supply because there are high voltage capacitors inside which can cause great injury to yourself. There are 5 screws holding the housing together and 4 screws holding the fans that need to be removed. Once the screws are removed, the top part of the housing needs to slide away from the fans. After that disconnect the fan cables. There are 4 screws holding the board in place, one in each corner. The board can then slide out of place and you will need to flip the board over and desolder the two power cables (blue and brown, please take a picture of where these are located before desoldering them to help with reassembly). After that the board should be completely free.
This recapping guide is only for the ACBEL 360w and 400w API1PC36 Rev. B power supply units. There are Samsung power supplies also for the MDD which this guide does not cover.
|Part Number on Board||Capacitance||Voltage||Diameter/Size||Height||Type|
|C3, C4, C5||100 µF||450||0.7"||1.6"||Radial|
|C8, C32, C401||47 µF||25||0.18"||0.46"||Radial|
|C16, C29||2200 µF||6.3||0.4"||0.9"||Radial|
|C30, C55, C56, C402||0.47 µF||50||0.2"||0.45"||Radial|
|C53, C57||4.7 µF||50||0.2"||0.45"||Radial|
|C59, C60||1000 µF||10||0.325"||0.76"||Radial|
|C403, C405, C407||10 µF||50||0.2"||0.45"||Radial|
|Part Number on Board||Qty||Compatible Part Number||Order Links|
|C3, C4, C5||3||450HXW100MEFR18X25||DigiKey Mouser|
|C8, C32, C401||3||10PX1000MEFC8X11.5||DigiKey Mouser|
|C16, C29||2||6.3ZLH2200MEFC10X20||DigiKey Mouser|
|C30, C55, C56, C402||4||UPS1HR47MDD1TD||DigiKey Mouser|
|C53, C57||2||UPW1H4R7MDD||DigiKey Mouser|
|C59, C60||2||10ZLS1000MEFC8X16||DigiKey Mouser|
|C403, C405, C407||3||50YXF10MEFC(T1)5X11||DigiKey Mouser|
If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search. Replacement capacitors can be found on both digikey and mouser, or pick your preferred source.