WG4900 screen bleed and color shift

mrnico

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I have a cabinet with a vertical WG4900 in it which works, but has a few issues. I'll admit, I have not adjusted the horizontal width yet or installed a cap kit. But the left side goes blue and the right to green, see pics. Also, images and text appear to bleed on it. Best course of action? I am ordering caps soon to recap the puppy. Thanks for any advice.
 

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Or the yoke has shifted too close to the tube (missing wedge on that side)..

I will try to look tonight when I get home from work. Is that something which will be obvious? This is my first real foray into CRT fiddling, and of course I don't want to screw anything up worse on a 25 year old monitor! I already have 2 GO7s which need work. Thanks!
 
Well, the degauss coil is connected. I even reversed the connector to try it. Need to check the coil for continuity with a meter still, I suppose. Both sides have wedges under the deflection yoke.

I did note that at least two caps look blown, up toward the tube and near the flyback. The tops aren't bulged out and cracked in the stamp marks, but they do look like maybe it opened a bit and the electrolyte leaked out. They have a bluish substance on top, and it looks like some spooge on the board in that general area as well. When I gets the caps in, I'll spray the chassis clean with electrical cleaner and try to clear it off well.
 
Check out these bleeding caps on the WG4900! Could be causing my color bleeds, I imagine...
 

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:rolleyes:

That is glue placed to hold the larger caps in place so they wouldn't vibrate during operation.

Those caps are old and need to be replaced, though. Age is most likely causing your bleeding...
 
:rolleyes:

That is glue placed to hold the larger caps in place so they wouldn't vibrate during operation.

Those caps are old and need to be replaced, though. Age is most likely causing your bleeding...

I wondered about that, but I have never seen glue that looked like this before. Usually it's an off-white, opaque stuff. This is light blue and translucent. And the tops of the caps are not flat like they should be, but the etched pattern has portions raised like a blown cap. I dunno, but gonna order caps anyway!
 
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