I am pretty sure this is the second time I have had this happen to my Pioneer SD532HD5. I have a 2-3 inch "yellow streak" near the top center of my screen. A quick cycle through the color screens on Avia shows that its isolated to the Blue CRT. I had small phosphor burn spots on my red CRT shortly after i got the set 3 years ago and the tube had to be replaced. Does anyone else have any other ideas of what it could be. The mirror and lenses are clean, its not on the screen; I removed it to take a look at the CRT and it does look like there something in the tube. So basically I am lookig for options other than living with it, and spending $500 just for a blue CRT...which lends the question if i have to, where can I find the part and can I install it myself?