No red the red has gone out of the tv, can i adjust something?

I got the red dots really bad on my toshiba 50hp66 after an hour or two of watching tv. I found out that if you open up the tv in the back on the left you will find two adjustment pots labelled Vsc and Vy. I took a sharpie and marked where the factory defaults were first. Then I adjusted the Vy pot down a little bit and the red spots were gone! My tv looks great again!

there should be 5 or 6 preset on the crt(tube) base 3 of them should adjust red /green blue in the white aera and the other 3 adjust re/ green /blue in the dark aera make these adjustment with the colour turned off.
Sad to say that this is most likley a low crt the blue gun as gone low.

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly.

Go here for a solution...

http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly.

Go here for a solution...

http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
2) Warped Video
3) Convergence menu does not adjust the red or blue correctly. 4) TV Chirps

Go here for a solution...

http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

OK. IF THE RED COLUR HAS GONE, YOU PROBABLY NEED TO CALL AN EXPERT. LIKE I TOLD SOMEONE ELSE, IF YOU USE A CABLE BOX, ITS PROBABLY THE CABLE BOX. ALL YOU NEED TO DO IS HAVE THEM LOOK AT YOUR TV AND YOUR CABLE BOX IF YOU HAVE ONE, AND/OR BUY A NEW TV AND/OR CABLE BOX.

don't run it like that suspect shorted crt or video output try adjusting the screen control for the specific color if no change then it is as mentioned put screen control back to the starting spot.

it is not the tube. There are three components that control red, green, blue. You will need to get it serviced

is the red gone on all inputs? do you have the tv hooked up, to a sat box, cable box via component video (Red, blue, green connections)? if so check the red cable on both ends.

might try to grayscale but that usually means taking the back off and making the adjustments