Brother MFC-J4420DW Power supply replacement

crwdns2936071:01crwdne2936071:0 — Removing the cover

The following steps are based on the Brother Inkjet DCP/MFC Service Manual MODELS: DCP-J4120DW MFC-J4320DW/J4420DW MFC-J4520DW MFC-J4620DW/J4625DW. In particular, step 9.29 “Power Supply PCB ASSY”.

crwdns2936071:02crwdne2936071:0 — Disconnect the cable

Remove the connector with the many red cables. (Already removed in the picture. The other plugs do not need to be removed.)

crwdns2936071:03crwdne2936071:0 — Remove screws

There are two screws that need to be removed.

crwdns2936071:04crwdne2936071:0 — Remove the power supply unit

Release the clip so that the power supply unit can be removed downwards.

crwdns2936071:05crwdne2936071:0 — Power supply

This is what the power supply looks like.