K4900 black bar of doom

88mph

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Sutton, Massachusetts
I have a K4900 here that has a black horizontal bar in the top portion of the image. A cap kit from BR brightened up the picture, but didn't help the bar issue. If you look closely at the sides of the black area, you can see a few short thin horizontal lines where it looks like it is attempting to raster but not getting very far. Any suggestions? Thanks!

monitorprob.jpg
 
Adjust your vertical dampening pot, and try decreasing your vertical size. I've seen some chassis' do that when the vertical size is increased, and it goes away when decreased. See if that is the case here....
 
Thanks mod! That did the trick. I think I have an old version of the 4900 (without the vertical dampening pot), but turning down the vertical size solved my issue.
 
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