Sony KDP-65ws550 Blue/Yellow Shadows

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absolutezero273c's picture
Sony KDP-65ws550 Blue/Yellow Shadows

I've had this KDP-65ws550 for 3 years now and it has worked fine until now. But just this past week I am getting a blue shadow. I've tried the following.:

1. Auto Focus failed to resolve

2. Manual convergence alignment with the remote...the convergence for the yellow/white/red works fine. The blue convergence actually moves it vertically but I can't tell for sure if the horizontal adjustment moves. But the blue is off by 3/4 of an inch in the center of the screen.

3. I've replaced both my convergence ICs (STK-392-560) and it still does the same thing. I read somewhere that the pico fuse on the G2 board may be bad but I can't seem to find an exact set of directions for the KDP-65wd550. The other directions I've found mention a G board but not a G2 board. And I can't seem to find out exactly whether or not there is only 1 or 2 pico fuses on the G2 board. I've found what I thought is the pico fuse (just 1) on the G2 board and my continuity tester said it is good.

4. I also tried the high voltage adjustment in the front for the blue but when I adjust it I seem to get a lighter screen and a series of lines that i didn't have before. I don't have any lines on the screen. I just see a blue shadow. It actually looks like a blue and yellow shadow. There was a wing nut on the top of the blue lens that was loose but I think that might only be for securing the lens and not for adjusting the alignement.

I spoke to a tech who said if the problem persists after replacing the STK392-560 ICs that the pico fuse is probably bad. But I can't confirm what component it is or how many there are. What I thought was the pico fuse was a larger component, white with an almost conical end on it that was a darker blue.

Has anyone had this problem? Is it the pico fuse?

sonylistens's picture
Hi absolutezero273c,

Hi absolutezero273c,

I?m Pat Kennedy with Sony Support USA.

Some helpful information, including How To & Troubleshooting,Videos & Tutorials and News & Alerts, may be found at Sony's eSupport website @

If you are unsuccessful in locating a solution there, please call our priority service # @ 1-888-750-7669 Hours:

■Mon-Fri 8:00am-12:00am (Midnight) ET
■Sat-Sun 9:00am-8:00pm ET

Thank you !

absolutezero273c's picture
I wasn't sure if I should

I wasn't sure if I should start a new thread or try to post another question to this same thread.  So here goes...


Can anyone tell me how exactly to remove a high voltage wire? 


The Sony repair manual has a diagram that mentions twisting the high voltage cable 90 degrees counter clockwise to remove it and then pulling up.


I'm removing the D board now to test and I've got one of the high voltage cables out of the device on the board but I need to get the second one out.  Not sure if I just got lucky with getting one of the 2 cables off the part on the D board or not but I can't get the 2nd one off.  I just want to make sure I don't break anything.


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