Brother MFC 420CN shuts off and on automatically every minute
Brother printer MFC 420CN shuts off and on automatically every minute, makes scratching noise, and does not make copies, does not print, and does not fax. It shuts off even when you are in the middle of menu options. I have tried disconnecting and connecting but the problem returns as soon as it is plugged into the power.
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Did you had lightning strikes or a high tension the days before? DF means that the faxmodem which is placed on the pcb is in disorder. The pcb has to be changed (sparepart is more expensive then a new mfc!)