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it is very likly you have problem with the buffer boards, sometime help to unplug conector and reconect, also check the smd fuse located on one of the boards since there are 2 buffer E&F.
Likely the panel is bad. If it's not covered by your mfc warr or you did not buy an extended warr then replace the tv. the panel is more expensive to replace than a new set.
Your control board needs replaced most likely. Does it work fine on a cool morning when you first turn it on, then develops the line when it warms up? Good indication it is the control board.
have a look at the scanner glass especially the thin strip glass this is the glass that is used when passing paper through the document feeder. if you do a copy from the main glass or print to it and no line apears there is probably dirt or tipex or a ink mark on the surfac, the other thing to look at os the drum charge unit as htese can sometimes fail to connesect correctly at the back and not sit tight in the slot this means the drum isnt charged on the edge.. good luck
Hi, The black vertical line is caused by a leaking capacitor, Check and replace poped capacitor with a new won and it will work fine again. No worries. Thanks for using fixya.
We have the same issue. How would one clean the roller?
black line from computer print and top feeder but not from scan
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