Question about Samsung SyncMaster 1100MB 21" CRT Monitor
I cant focus the image of my monitor, the OSD only allows tilting of the focus plane (so either the left or the right side shows a sharp image). The other properties (brightness etc.) are fine. The monitor is about 8 years old and has been used extensively.
Possible worn out tube. The focus adjustment is on the flyback transformer and has to have the back cover removed to access it. The flyback will be a black and have a red wire connecting to the crt tube. This is very high voltage and can be dangerous. With a plastic screwdriver you can turn the focus adjustment knob on the transformer. Do not adjust the screen control knob. If the focus does not clean up, then the tube is probably worn or the flyback is bad.
Posted on Nov 27, 2013
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Posted on Jan 02, 2017
SOURCE: Brightness Problem
Since focus adjustment using the flyback rear controls (EHT) has no effect, then it could possible mean two things:
Of course best would be to have the EHT checked/replaced.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
Posted on Aug 14, 2008
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