kinda hard to tell by the description. Might need to do a short video or picture showing the symptoms.

The squeal is caused by a loose core in the flyback IF it sound like a 15khz squeal? The other issue sounds like a fault in the vertical circuit.

But at the same time, it could be all in the power supply and squeal is coming from there as well, and rendering a low B+ voltage. Does the picture appear to be slightly smaller than usual? not quite as much brightness, or brightness causes the raster to bloom? This would be indicative of low B+