>>13854>remove that flickeringDoes OP want it for retro effect? If not; looks like dust in the VR that controls H-Sync. turn off spray switch lube in there, roll around a few times and bam - solid. (possible its the internal VR, remove case (carfull >1000v and big caps! don't touch anything save the variable resistors with an insulated screw driver) on edge of MB will be some tiny adjusters - clean and rotate these. - note placement of them tho, as these tend to be very sensitive and the smallest movement makes a huge change in position or brightness.